Returning to WoW after a lengthy break

[Ipeonyou]

I was a tankadin back at the release of Vanilla WOTLK, and quit around the time that Ulduar was released. Just reactivated my account today, and am looking to get back into the mix. I am familiar with 969 rotation and all that fun stuff.

My question is, have their been any notable changes since I left? Anything that needs to be done differently? Talent changes, glyph changes, etc. I've been looking through some of the forums, and it all looks basically the same. Just wanted to make sure.

Thanks!

[Boyfriend]

There has been some 'minor' changes, off the top of my head:

Seal of Command is good now, awesome for heroics and trash.
Expertise is a good threat stat now.
AD got reworked and everyone whines about how OP it is.
Divine Guardian is pretty much a mandatory raid talent now for it's 20% raidwall.

[Arcand]

20% raidwall.

Also, there's a new term, raidwall, which describes an ability which
reduces damage taken by everyone in the raid. (Neologism-portmanteau of
raid and Shield Wall.)