Aside from Mazinger, There also announcement of a new scifi anime in the works by Shoji Kawamori, the creator of Macross, Escaflowne, and Aquarion.
Named Heavy Divine Unit Pandora (or just Pandora), which is a sort of post-apocalyptic world, where experimental generator goes awry, causing everything to evolve into intelligence and not necessary friendly to humans. A scientist who was involved with the generator that trigger the event livings in a essentially a dead city trying to make mends to the situation. The human race is on the verge of extinction. The scientist has ally as he tries fend off the mutate biological and mechanical, he got car. I'm joking he has variable transformable car/mecha.
The trailer looks darn good. I hope it lives up to the hype. :D