The San Diego Comic-Con Iron Man 3 Panel saw the official announcement of an Ant-Man movie currently being worked on as well as some footage shown off.
Currently, writers Joe Cornish and Edgar Wright are working on the script.
But we go get an official logo, just as we have with the previous mentioned new Marvel movies.
Regarding the footage, here is a description from the Marvel Live Feed, Via io9:
And Wright showed us some test footage he shot featuring Ant-Man! And despite some rough spots, including bluescreen and unfinished effects, it was absolutely clear that Ant-Man can look badass and tough, rather than just being a joke character.
Basically it's a scene where two figures in sunglasses are guarding an elevator door — and Ant-Man comes out of a ventilator grill, at tiny size. He runs up the hallway at small scale, and then suddenly becomes fullsize in front of the guards. They pull out their guns — but Ant-Man's already tiny again, and he's running along the guard's gun. He jumps and punches the guard in the face, using all his actual weight to knock the guy out. Then he grows big again and flips the other guard over and throws him into a window. The rapid shapechanging and ultra-violence makes him look just fantastically tough.
Oh, and the costume looks pretty stylish, with the classic ant-mandible mask, but also a darker suit. Not so much red, more like something that could fit in on the S.H.I.E.L.D. helicarrier. Wright says he wanted the costume to "mix the silver age and the contemporary look of the character."