Any thing, and every thing related to summoning. Pics, creatures. Creatures you would like to see be summonable in future games etc. What we know, what you would like to hear in the upcoming news.
I want the soultrap trick to return, but it is unlikely... they fixed it in the transition from Morrowind to Oblivion. It is a fun glitch, because it effectively turns any summon into the permanent version, but still under your control. It was game breaking, but still fun.