According to Wikipedia, it's supposed to start up again on Sunday April 8th. The first episode is titled "A Few Kind Words".
http://en.wikipedia.org/wiki/List_of_The_S....282006-2007.29
Anyway, I agree, last season was absolutely brutal. I defended the show during Seasons 4 & 5 when the violence and action of the first three was scaled back, but last season...oh man...there were so few memorable moments I'm having a hard time even remembering what happened. Except for Tony's coma dream of course.
I can live without the violence as long as there is a compelling story and plotline, but that wasn't even the case last year. I really hope they were just "setting the table" for a great final eight episodes. It would be a shame to see the greatest TV drama of all-time go out with a whimper.
As far as Seinfeld's finale goes, I remember reading once that Larry David, upon retrospect, wishes today that he had written it differently. I'll try to find a link...and speaking of Larry David, production on a new season of Curb Your Enthusiasm began last October. So new episodes of that should be starting soon as well.