With a free 7-days of WoW offer in my mailbox, I ended up connecting with work friends and did in fact re-subscribe after 2 years of avoiding it to save money.
Anyways, Cataclysm is here...Half of Stormwind is gone and there's a Tauren settlement squeezed into the back of Orgrimmar. It's definitely a new world! Dalaran in Northrend no longer has portals to the other parts of the world. A few mages were making a killing in gold offereing portals, I happy traded 5 gold to go see the changes in Stormwind.
I'm currently focusing on a new character, now level 13, a blood elf named Alida on Azjol-Nerub, along with two work friends, we're going to play through the early content and see what's new!