It's a different enough game, and whatever good parts from WAR may have will probably be put in when WotLK is in.

From what I'm hearing, once can max level in a weeks time to 40. And the grind begins by doing quests over and over to get the "other" level called "renown" ranks.

It's a grind of sort with whatever content they have, and from back before they chopped off a whole lot of content, whoever plays WAR will have 2 months to consume game content before WotLK is out.

Even some of the hard core PvPer will probably feel the RvR content of WAR state after a while.

Since I only 5-box recently from 4-bx, it's would easy for me to cancel 2 accounts while I check out WAR for a month or 2.