The ItemBonus lib has been updated so ItemValue automagically support Expertise if you update the library. With WAU, it's already there if you install without embedded lib.
I use the WOWACE updater, and I have been unable to use the new expertise rating.
I'm still getting SwordSkill, 2 Handed Sword Skill and all that trash. =/
Are you able to please explain how installign withotu embedded lib is different to what I migth be doing. (Clicking the addons I want and having them install automatically)
On a slightly different note. I couldn't seem to spot where I could assign a value to a weapons DPS rating. Is it there? Or do I have to do something with formulas and the wepaons max + min damage / delay etc?