Richard and Paul are both way smarter (and by consequence, way more rich) than I am. They thought ahead, took notes on all the ingredients for the brand new recipes in 2.2, and had all the supplies sitting at high prices on the AH yesterday, ready to be sold to anyone who didn't want to wait to make the new items. Beautiful. I'm jealous-- wish I'd thought of it first.
Soulcloth is the big winner, it seems-- it requires Netherweave (which pretty much everyone has), and tons of Soul Essences, which basically drop like candy in Karazhan. If I recall correctly, Soul Essences have sold ok but not great in the past (at least on my server), and they probably still won't sell well, once everyone's made everything they want. But for the next few days, while everyone's learning the new recipes, you'd probably do well to clean out your Soul Essence inventory.
Primal Shadow and Primal Air are also doing well from the patch, but since those are Primals, they're fairly rare anyway-- if they were really everywhere (like, say, they dropped off of every demon in the world), Blizzard would change things. But over the next few days (and probably every few days after a big set of crafting changes, so keep an eye out for 2.3 profession news), there's lots of money to be made.