Well I’ve just completed an amazingly painless upgrade to the first release candidate ofWordPress 2.5, the only thing that caught me out was an old functions.php file left over from a previous release that caused a PHP5 error about redefining a function!
There’s bound to be some hidden breakage that I’ve not yet spotted, so leave a comment (if you can) or drop me an email as chris (at-the-domain) csamuel.org with the details please.
Update: After a few days of playing around with it I’ve got to say I like it the new admin interface. I’m finding it much easier to navigate and compared to the other WP 2.3 sites I admin the dashboard seems a lot less cluttered and that ever-so-subjective word, “clean”.
The only niggle I’ve got so far is that now in the widgets view you can only see the one column of widgets at a time, so if you’re using a 3 column theme (as the current one here is) you can no longer move a widget directly from one column to another. But I can live with that.