# \[New release\] Beta 22
**URL:** https://discourse.aurelia.io/t/new-release-beta-22/6275
**Category:** vNext
**Created:** [September 30, 2024, 9:52am UTC](https://discourse.aurelia.io/t/new-release-beta-22/6275 "2024-09-30T09:52:00Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@bigopon](https://discourse.aurelia.io/u/bigopon)
#### Post date: [September 30, 2024, 9:52am UTC](https://discourse.aurelia.io/t/new-release-beta-22/6275/1 "2024-09-30T09:52:00Z")
Happy Monday folks! It’s that time again for a new beta release: beta 22 is here [Release v2.0.0-beta.22 · aurelia/aurelia · GitHub](https://github.com/aurelia/aurelia/releases/tag/v2.0.0-beta.22)
As usual, please help try it out and file issues for any bugs/unexpected behaviors you run into. You can also join [this Discord thread](https://discord.com/channels/448698263508615178/1290247803515306005) if you prefer.
Previous releases:
- [[New release] Au v2 beta 21](https://discourse.aurelia.io/t/new-release-au-v2-beta-21/5512)
* * *
## What’s Changed
### BREAKING CHANGES:
- **ast:** correct null/undefined handling (#2055) by @bigopon ([b96d7c4](https://github.com/aurelia/aurelia/commit/b96d7c4))
- **observers:** change callback timing to after notify (#2039) by @ekzobrain, @bigopon ([1e587e1](https://github.com/aurelia/aurelia/commit/1e587e1))
- **parser:** no longer provide default to exp parser interface (#2024) by @bigopon ([b55cbcd](https://github.com/aurelia/aurelia/commit/b55cbcd))
- **ast:** separate & allow binding behavior and value converter evaluation to be optional (#2058) by @bigopon ([7d7e21b](https://github.com/aurelia/aurelia/commit/7d7e21b))
### Features:
- **observation:** ability to watch an expression (#2059) by @ekzobrain, @bigopon ([6cd6b8d](https://github.com/aurelia/aurelia/commit/6cd6b8d))
- **runtime-html:** reuse host and hostController (#2043) by @Sayan751 ([0fe216e](https://github.com/aurelia/aurelia/commit/0fe216e))
- **bindable:** support aggregated callback (#2033) by @ekzobrain, @bigopon ([7cdf3f0](https://github.com/aurelia/aurelia/commit/7cdf3f0))
### Bug Fixes:
- **router-lite:** allowed dot in parameter value (#2057) by @Sayan751 ([9337c84](https://github.com/aurelia/aurelia/commit/9337c84))
- **watch:** initialise only once (#2056) by @bigopon ([7ae2cfa](https://github.com/aurelia/aurelia/commit/7ae2cfa))
- **router:** fix refresh with url params issue (#2051) by @jwx ([6b733b1](https://github.com/aurelia/aurelia/commit/6b733b1))
- **repeat:** fix update issues when there are duplicates (#2050) by @aegenet, @fkleuver ([9834c40](https://github.com/aurelia/aurelia/commit/9834c40))
- **router:** fix redirect to async raise cond issue (#2046) by @jwx ([c5dfca3](https://github.com/aurelia/aurelia/commit/c5dfca3))
- **router-lite:** element injection issue (#2045) by @Sayan751 ([4d93507](https://github.com/aurelia/aurelia/commit/4d93507))
- **validation-i18n:** prioritization of translated messages (#2029) by @ivanbacher, @Sayan751 ([a5340f8](https://github.com/aurelia/aurelia/commit/a5340f8))
- **radio:** handle repeated start/stop correctly (#2031) by @oskar-anderson, @bigopon ([430b8f0](https://github.com/aurelia/aurelia/commit/430b8f0))
- **validation-html:** reset binding while unbinding BB (#2027) by @Sayan751 ([a3b1d09](https://github.com/aurelia/aurelia/commit/a3b1d09))
### Docs:
- **vite-plugin:** add vite instruction for tailwindcss-integration.md (#2028) by @hdzcalmir ([47913c5](https://github.com/aurelia/aurelia/commit/47913c5))
## New Contributors
- @hdzcalmir made their first contribution in [Update tailwindcss-integration.md by hdzcalmir · Pull Request #2028 · aurelia/aurelia · GitHub](https://github.com/aurelia/aurelia/pull/2028)
**Full Changelog** : [Comparing v2.0.0-beta.21...v2.0.0-beta.22 · aurelia/aurelia · GitHub](https://github.com/aurelia/aurelia/compare/v2.0.0-beta.21...v2.0.0-beta.22)
---
### Author:  [@HIRANO-Satoshi](https://discourse.aurelia.io/u/HIRANO-Satoshi)
#### Post date: [October 1, 2024, 6:40am UTC](https://discourse.aurelia.io/t/new-release-beta-22/6275/2 "2024-10-01T06:40:06Z")
Yeah! Go Go Aurelia!