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A relaunch changelog and announcement

Work out what changed since the first launch and turn it into a changelog entry and a relaunch post draft.

  • Free, no sign-up
  • 1 to 2 hours with an agent
  • By Devvrat Hans
  • Version 1.0, updated Oct 26, 2026

1Your site and stack

Optional. The prompt adapts as you type; leave a field blank and the agent works it out.

2Copy it into your agent

relaunch-changelog.md62 lines, about 827 tokens

Paste into any coding agent: Claude Code, Cursor, Codex, Copilot, Windsurf or Cline.

# A relaunch changelog and announcement

Relaunching the production site works when there is a real story: what changed, and why it matters to people who saw the first launch. Work out what has changed since the first launch from the code and changelog, and turn it into a changelog entry, a relaunch post draft and a list of pages and screenshots to update.

Site: not given. Find the production URL in the project config, or ask me.

## Ground rules

1. Read before you write. Explore the parts of the codebase this job touches and tell me what is already in place.
2. Plan, then stop. Give me a numbered plan: what you will change, in which files, and why. Wait for my approval before editing anything.
3. Fix things at their source (the shared layout, the config, the generator), not with one-off patches page by page.
4. Keep the project's conventions: its framework APIs, file layout, naming and code style. Add no new dependency without asking.
5. Where something is already done well, say so and leave it alone.

## You will not

- Edit `.env` files, secrets or API keys, or print their values.
- Deploy, push, merge or publish anything.
- Delete data, or run migrations or scripts against a production database.
- Add tracking, third-party scripts or links to any site I did not ask for.
- Change copy, design or behaviour that this job does not need.
- Post the announcement anywhere.
- Claim improvements the code does not show.

## Your stack

- Framework: Work out the framework, router and build output from the project files (package.json, lockfiles, framework config) before planning, and say which you found.
- Host: Work out where the site is hosted from the config files (vercel.json, netlify.toml, wrangler config, Dockerfile, fly.toml) and say which you found.

## Steps

### 1. Find what changed

Ask me for the first launch date. From git history, releases and the changelog since then, list the user-visible changes: new features, big improvements, fixes people asked for, pricing changes. Ignore internal refactors unless they made something noticeably faster.

### 2. Pick the story

Group the changes into three to five headline improvements and tie each to what users asked for, if you have that feedback. Propose a one-line summary of the relaunch. Wait for my choice.

### 3. Write it

Draft a changelog entry for the relaunch, and a launch post (title and body) in plain words: what it is, what changed, who it is for, and a thank-you to people who gave feedback. Keep platform limits in mind (for example about 60 characters for a tagline).

### 4. Update the surface

List every page, screenshot, video and share image that still shows the old product, and update the ones in the codebase. Make sure the landing page mentions the headline improvements.

## Done means

- [ ] User-visible changes since the first launch are listed.
- [ ] I chose the headline improvements and the one-line summary.
- [ ] A changelog entry and a relaunch post draft exist.
- [ ] Outdated pages and images in the codebase are updated; the rest are listed for me.

## Report back

When you finish, give me:

- what you changed, file by file;
- anything you skipped, and why;
- anything I must do by hand (DNS records, dashboards, accounts, deploys);
- how to check each change on the live site.

One-line version

For agents that can read a URL. It fetches this prompt with your settings applied.

Read https://abacklaunch.com/prompts/relaunch-changelog.md and follow it for this project.

3Check the result

When the changes are live, run these free checks. Add your site URL above and each one opens already running on it.

This prompt will not

  • Edit .env files, secrets or API keys, or print their values.
  • Deploy, push, merge or publish anything.
  • Delete data, or run migrations or scripts against a production database.
  • Add tracking, third-party scripts or links to any site I did not ask for.
  • Change copy, design or behaviour that this job does not need.
  • Post the announcement anywhere.
  • Claim improvements the code does not show.

It reads your code first, shows you a plan, and waits for your approval before it changes anything.

What you get

  • A list of what changed since your first launch
  • A relaunch changelog entry and post draft
  • Outdated pages and screenshots found and updated

How to use this prompt

  1. 1

    Describe your stack

    Add your site, framework and host. The prompt adapts; blank fields are left for the agent to work out.

  2. 2

    Paste it into your agent

    Open your project in Claude Code, Cursor, Codex, Copilot, Windsurf or Cline, and paste the prompt or the one-line version.

  3. 3

    Approve the plan

    The agent reads your code, shows you a plan with the files it will touch, and waits. Change anything you disagree with.

  4. 4

    Check the result

    When the changes are live, run the free checks below on your site to confirm each fix.

What the agent does

Relaunching the production site works when there is a real story: what changed, and why it matters to people who saw the first launch. Work out what has changed since the first launch from the code and changelog, and turn it into a changelog entry, a relaunch post draft and a list of pages and screenshots to update.

  1. 1. Find what changed

    Ask me for the first launch date. From git history, releases and the changelog since then, list the user-visible changes: new features, big improvements, fixes people asked for, pricing changes. Ignore internal refactors unless they made something noticeably faster.

  2. 2. Pick the story

    Group the changes into three to five headline improvements and tie each to what users asked for, if you have that feedback. Propose a one-line summary of the relaunch. Wait for my choice.

  3. 3. Write it

    Draft a changelog entry for the relaunch, and a launch post (title and body) in plain words: what it is, what changed, who it is for, and a thank-you to people who gave feedback. Keep platform limits in mind (for example about 60 characters for a tagline).

  4. 4. Update the surface

    List every page, screenshot, video and share image that still shows the old product, and update the ones in the codebase. Make sure the landing page mentions the headline improvements.

Done means

  • User-visible changes since the first launch are listed.
  • I chose the headline improvements and the one-line summary.
  • A changelog entry and a relaunch post draft exist.
  • Outdated pages and images in the codebase are updated; the rest are listed for me.

Questions

When is it worth relaunching?

When the product has changed enough that someone who saw the first launch would see something new: a major feature, a redesign, or the fixes everyone asked for.

Should I mention the first launch?

Yes. Thanking people who gave feedback and showing what you did with it is a strong story.

Can the agent post it for me?

No. It drafts; you post, so the timing and wording stay yours.

Does this prompt add links to Aback Launch to my site?

No. Nothing in the prompt mentions Aback Launch or asks your agent to link to us. The only exception is an optional badge step, which stays off unless you tick it. Some prompt libraries slip their own link into your codebase by default; we think that should always be your choice.

Which coding agents does it work with?

Claude Code, Cursor, Codex, GitHub Copilot, Windsurf, Cline, and any agent that can read your project and edit files. You can copy it as a plain prompt, save it as a Claude Code skill or a Cursor rule, or add it to AGENTS.md.

Is it safe to run on my real codebase?

The prompt makes the agent read first, show a plan and wait for your approval, and it forbids touching secrets, deploying and deleting data. Still review the changes and run your tests before you deploy, as with any change.

Changelog

  • v1.0First version.

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