Hi,
Sorry for the cross posting, I'm lazy today 
I've put the table under the Marketing category, even if it's more transversal than Marketing, because I didn't want to open yet another category (that should go under Release)
http://wiki.documentfoundation.org/Marketing/Release
This is the global tasks matrix. I think that for each release we should add some dates and who is doing what, and maybe details or remarks. Don't hesitate to add what I may have forget and to make it more pretty, it's yours now 
Kind regards
Sophie