Both the Wiki and the bug tracking system at Launchpad have been already set up..
The next version code name will be "Maverick Meerkat ", the same animal featured as Timon in Disney's Lion King, while the version number should be 10.10. This confirms the usual naming and numbering schema and the fact the the final release should be due sometime within the forthcoming October.
This next version, which obviously won't be Long Term Support (LTS), should sport a lighter and faster environment with GNOME 3.0, aka GNOME Shell, among the main advances. Everything has been explained by Mr. Shuttleworth in his own blog since the beginning of April.
It's important to say to the impatient thar the first alpha release is not due earlier than the end of the next June so maybe it'd be better to take advantage of the Lucid Lynx while the technical overview of the meerkat will start getting more details.
The Ubuntu Developer Summit for Maverick will take place from May 10th to 14th, 2010 at the Dolce La Hulpe Hotel and Resort in Brussels, Belgium (nice domain name, isn't it?).