According to Gundam.info, a new Gundam series will be revealed at a press conference held on June 13th at 1:30 PM (JST). The live event will be streamed on Bandai Channel Live.

[UPDATE 06.08.2011] – The new Gundam project has been revealed to be a kids TV series, entitled 「Gundam AGE」. Below are scans from CoroCoro Comic magazine. Begins this Fall.

[UPDATE 06.13.2011] – First promotional video for 「Gundam AGE」 is available below.

[Source]