Some blueprints are waiting for you to have a look :)
YES, the planning for Trusty Tahr (14.04) has already started.
The real hard work will start right after the vUDS which will be from 19-21 of Nov, 2013 :)
More Information about Ubuntu GNOME Brainstorming Team:
https://wiki.ubuntu.com/UbuntuGNOME/Brainstorming
Everything is explained on that Wiki Page!
Should you have any Q, please ask me and I will be more than glad to help!
Thank you for choosing and using Ubuntu GNOME. Let's make this cycle the best ever, shall we? :)