Tomorrow, we can summon a wrathguard or an observer or a shivarra. Tomorrow, we can have AoE Drain Life. Tomorrow, we can ride felsteeds on water. Tomorrow, we can enter Metamorphosis whenever we wish. Tomorrow, players everywhere will be begging the superior class for summons. (I take bribes).
I've got your back with a summary of what to do as an 85 warlock with Mists of Pandaria mechanics in the final month of Cataclysm. Later, I'll flesh out the differences between levels 85 and 90. We'll visit tier 6 talents again, look at consumables and enchants, and get your gear ready for tier 14 raiding.
But for now, you just need to survive patch 5.0.4.