whatever you do, please DON'T DOWNLOAD THEM! Unless of course you are a developer or take great pleasure in incomplete, unpredictable, and potentially crashing software.
How incomplete? So incomplete that, among other things, you won't yet be able to view YouTube videos, change your privacy settings, set your default search provider, or even print.
Sounds like fun to me. :-) I tried out the Mac build, and overall it feels quite nice, much nicer than the Windows version I've never really been able to accept. The biggest difference is that the Mac version, like all good Mac programss--in fact, like all good GUI programs period--has a real menu bar. OK, I know that neither Windows or Linux has yet been able to get menu bars right 25 years after they first had a Mac to copy from, but is that any excuse for eliminating them completely? I think not.