Last week I wrote an extensive explanation of hit rating.
The folks at Elitist Jerks have been doing extensive in-game testing. So far there is conclusive evidence that that one-handed base chance to miss and the chance to miss with special attacks has been reducded to 8% (formerly 9%). I have edited the post to reflect the new hit rating cap.
This doesn’t really have a lot of impact. Before, you needed 131 hit rating to eliminate misses with special attacks. Now you only need 99. I’m fairly certain that most or all rogues are above both of those numbers at level 80, so we won’t be adjusting our gear due to this change.
There is some evidence that the dual wielding miss chance is now 27% (down from 28%) but its not conclusive yet. If the experts settle on a new number for that, I’ll adjust my numbers accordingly.