We just released the next Swift beta, beta8. The major focus of this release was fix some crashes, problems, and papercuts from the previous beta(s). For a full list of changes, see the Swift 1.0beta8 release page. The list of outstanding cases is getting shorter and shorter, so this will hopefully be one of the last few betas before 1.0. This also means now is the perfect time to give Swift a shot, and give us your feedback!