What's new in Firefox 3.7 pre?http://mashable.com/...refox-37-screenshot/
I tried the nightly build on Windows Seven but it didn't like TabMixPlus. I reverted to 3.6 pre Aug 5 nightly build. Looks like I'll be staying with that until 3.6 final comes out, unless something startling shows up in 3.7.
If you have Minefield 3.6 pre this installs to the same folder and updates it. The good news is, I uninstalled without erasing settings, and just installed 3.6 Aug. 5 build again and it seems ok. Nothing hosed afaict.