Well if it answers some of your questions, the last that I heard about the live-action TV series, Lucas was working to create a sort of meta-plot for the first 100 episodes, leaving other writers to create the actual scripts and specifics. The entire first season will be written and filmed at once. However, this won't even begin until 2008.
Lucasfilm has been guaranteed 100 episodes of one hour each. They will be based on a spinoff character (shown in the movies but not a focus), and they will be set between episodes III and IV.
Oh, and it'll all be in 3D. As in glasses...yeah.
This is all on TFN (
here), and largely from the man in plaid himself. However, since shooting won't even begin until '08, it's too early to expect to know specifics.
