Well it just needs to be confirmed at the end of the Grand Prix now I guess.
http://www.autosport.com/news/report.php/id/116138
Also what Montezemolo said at the Paris autoshow yesterday pretty much confirms it.
"One must be able to cope with changes and we are proud to close an important cycle. He (Alonso) gave everything and did extraordinary performances. We all thought and hoped we could achieve better results together."
Sad it's going to end this way, with no titles to show for it...just a couple of bitter 2nd places.