Moving the Zandalari heroics into the general heroic pool seemed like it would happen eventually, considering that having multiple tiers of dungeons to queue up for could get confusing over time. Now, players will be placed into dungeons based on their ilevel and not necessarily which dungeon category they queue for.
This presents an interesting dilemma, though. Players who want to do a quick heroic right now can queue for a random, non-Troll heroic and be in and out with half the VP (and half the stress -- I'm looking at you, Jin'do) in half the time of a Troll heroic. In 4.3, it doesn't appear that you'll have the option. Then again, everyone at a high enough gear level to care about this stuff will just queue for the Hour of Twilight heroics anyway, right?
Brace yourselves for what could be some of most exciting updates to the game recently with patch 4.3. Review the official patch notes, and then dig into what's ahead: new item storage options, cross-realm raiding, cosmetic armor skinning and your chance to battle the mighty Deathwing -- from astride his back!