Yes hardly 15 days ago WordPress 2.6 was launched !! I upgraded to it. Working fine for me. I didn’t notice any flaws but still tester are the great people. they do great things with there box.
Few Major Issues observerd :
- Sporadic timeout /wp-includes/gettext.php
- Category/tag URL changed if the permalink structure has static strings
- Publishing directly sets wrong date on ‘post_date_gmt’