Blizzard Game Designer David Kosak has commented that a Cataclysm-like shake up probably wouldn't be sustainable in the future.
Speaking with Strategy Informer earlier today, we asked Kosak whether change on this scale was viable as a long term solution.
Apparently Cataclysm won't be the last expansion for World of Warcraft and a blue commented on the number of changes in Patch 4.3.
seriously, I'm sure they'll make another one or more after this as well. WoW is still a HUGE cash cow
Blizz hinted years ago that they have a few more expansion ideas lined up which would eventually take the level cap to 100 and beyond. Given that Cataclysm only raised the cap by 5, and the new expansion does the same, we can assume that there will be at least 2 more expansions.
Pixie brings us a how-to on obtaining your own giant ridable Seahorse in World of Warcraft.
Barugaara brings us a guide on how to gear your resto Druid for heroics in World of Warcraft: Cataclysm.