Been using the pre-beta for ages in a "first alternative to main browser if TOR isn't needed" and I like it very much. Amazingly stable for the stage it's at (for me anyway).
Just installed the update and -YAY!- plugins! And a Linux version too!
The fact that it's called 'beta' is just about the only reason that I haven't made it #1 browser (and I might do it anyway after watching it suspiciously for a while). My current #1 -a "last version before it got really crap" Opera- is starting to fray around the edges a bit, so will have to go at some point in the near future anyway.
Good news.