Today marks the release of WordPress 1.5 “Strayhorn”, and I can say that I’ve successfully upgraded to the stable version. As I mentioned before, I’ve been running on the 1.5 beta for about a month, and everything seems to be working great. The new themes system and improved plugin API are wonderful. The comment spam protection in the core is much improved. Go checkout the bugtracker changelog and changelog on the wiki for more details.