Were you surprised to see WordPress 2.8.3 released? I was, but I didn’t think it would be because of the same security related issue that 2.8.1 was supposed to address. I thought 2.8.3 was released as a bug fix version as a few annoying bugs have popped up that were giving people issues. It was inevitable that a 2.8.3 would be released before 2.9. I’m glad however to report that 2.8.3 does contain some bug fixes as well as completely fixing the security exploit. The bug I had in mind deals with editing comments and the URL field being blank even though there was a value represented in it, which has been fixed. The upgrade was easy peasy for me and I suggest you upgrade as well. But please, backup your data first before you even think about touching that upgrade button.
WordPress 2.8.3 Released