Is World of Warcraft going to suck for new players?

So, I bought World of Warcraft because my Xbox 360 got the Red Ring of Death and I had heard how amazing it is. But, now after having bought WoW and the first expansion, the Burning Crusade, I find out that the upcoming third expansion, Cataclysm, is going to drastically change the game. Is this going to suck for new players like myself?