Seems like Marvel is wasting no time to find a replacement since the departure of Jon Favreau.
Rumor has it that Shane Black might write and direct Iron Man 3. If you don’t know who Black is then you might be familiar with his work. Shane was the man who wrote both Lethal Weapon 1 and Lethal Weapon 2.
I’m not too familiar with his work so I can’t pass judgment just yet.