Now there is a monster manual update article listed. It's labeled as "Aberrants"; since there's no such entry in the original MM, I assume that means they're doing various creatures of the Aberrant origin. Hopefully the Aboleth are among them (they would probably have been my second choice after wights).
I hope the jousting article introduces more utilities, feats, attack powers and magic items for mounted combat but I hope it doesnt reintroduce the lance as a weapon, im of the camp that Lance = Spear.