Am 13.10.2015 um 09:37 schrieb Sönke Ludwig:

Despite it's name, this release should be considered a beta release. [#1268][1] will potentially still make it in, but otherwise only bug fixing will happen at this point. As with the previous versions, the final release will happen at the same time as DMD 2.069.0. Please use the chance to test for any remaining issues (simply dub upgrade --prerelease on your project(s)).

Changes in this release:
https://github.com/rejectedsoftware/vibe.d/blob/master/CHANGELOG.md

[1]: https://github.com/rejectedsoftware/vibe.d/pull/1268

The official first beta has now been tagged and includes fixes for the
issues found in the last alpha. REST collections didn't make it for this
release, but the new TaskReadWriteMutex did.