It's always been that way. Quest exp has never counted towards removing your rested status.

I saw the new special mounts in Dalaran, those things are a bit too expensive for my blood. I'm OK at making money in game, my problem has always been twinks. My main has tailoring at 381 currently, and it gets expensive making imbued netherweave bags for 7 alts. And while I stick a few of my alts with money making professions, a lot of them have expensive hobbies.