## Summary
PR [#5366](https://github.com/paperclipai/paperclip/pull/5366) already
merged the v2026.511.0 changelog. This follow-up bumps the artifact to
the actual cut date and drops the pre-alpha sandbox work per maintainer
feedback.
- **Rename** `releases/v2026.511.0.md` → `releases/v2026.512.0.md`
- **Bump header / date** to `# v2026.512.0` / `> Released: 2026-05-12`
- **Drop new sandbox content** (pre-alpha, not yet ready):
- Daytona sandbox provider plugin highlight
([#5580](https://github.com/paperclipai/paperclip/pull/5580),
[#5586](https://github.com/paperclipai/paperclip/pull/5586))
- Cursor sandbox support improvement
([#4803](https://github.com/paperclipai/paperclip/pull/4803))
- Cursor sandbox runtime resolution fix
([#5446](https://github.com/paperclipai/paperclip/pull/5446))
- Sandbox provider messaging polish
([#4902](https://github.com/paperclipai/paperclip/pull/4902))
- **Add LLM Wiki plugin package highlight**
([#5716](https://github.com/paperclipai/paperclip/pull/5716)) — the
package itself landed on master after #5366 merged.
- **Update Upgrade Guide closer** to mention only the `cursor_cloud`
adapter as opt-in.
The `cursor_cloud` adapter is kept in (adapter, not sandbox). The
exe.dev and Cloudflare sandbox provider plugins that landed since the
merge are also excluded as pre-alpha.
No breaking changes; the nine new migrations (`0075`–`0083`) carry over
unchanged from the merged 511 file.
## Test plan
- [ ] Maintainer review of the dropped entries — confirm I caught
everything sandbox-related you wanted out
- [ ] Confirm Cursor Cloud adapter staying in is intentional (flag for
removal if not)
- [ ] Confirm LLM Wiki plugin package highlight phrasing
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-authored-by: Paperclip <noreply@paperclip.ing>
Dotta