Patch 5.1 introduces a LOT of changes, so please make sure you read them.
There's a good colourful version of the patch notes on MMO-champion:
http://www.mmo-champion.com/content/3030-Patch-5-1-Live-This-Week
The detailed specific class spell changes are noted here:
http://www.mmo-champion.com/threads/1230462-Patch-5-1-Unofficial-Spell-Changes?p=19230084#post19230084
TLDR:
5.1 brings:
-upgradable items (+8 ilevels)
-a new faction to rep up with (and more rep gear)
-100% rep boosts for alts (Grand Commendations)
-new Wrathion quests
-Brawlers Guild faction (PVE combat challenges and ranks)
-something about new pets
-your UI will now display 'loss of control' alerts by default (things like Silence etc) - check your settings when you log in!
-some new scenarios
-A LOT OF CLASS CHANGES!! (read the detailed spell change notes)
Log on early to get the patch loaded and installed and remember to update your addons before any raids!
And Aszune is already up and running. Long list of addons to update though!
Looks like I'll have a busy afternoon when I get in.
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