Two big releases
The most important is of course the official release of Firefox 1.5 – of course there’s no huge feature difference from the Release Candidate versions (except bug fixes, although there weren’t all that many to begin with) but I know a lot of people aren’t comfortable with using test versions of software and I can tell you that there is a significant difference between 1.0.x (the previous stable version that most people are using) and 1.5 – enjoy!
Also Wordpress (which you see before you) has been updated [not today, I only just noticed it] from ‘beta’ to ‘release candidate’ status – imply that its slightly less buggy and crashy than before 
Of course they still haven’t fixed my pet hate, but it is not slated for fixing by version 2.1 (why it takes that long to change 3 characters in a CSS file is beyond me). I’ll install the Release Candidate anyway and see if it fixes some of the other bugs [the ones I’ve noticed in the beta anyway].