Here's some gameplay from the PC version:
Very bad video quality though, but the gameplay doesn't look too bad

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There's some console gameplay in the little box at the top right here:
www.eafootballworld.com
(look at Day 1 Video 4, very good

)
There are various other console gameplay videos:
http://www.jeuxvideo.tv/video/fifa-09.html#view:256220
http://www.jeuxvideo.com/extraits-videos-jeux/0000/00000831/fifa-09-chelsea-manchester-hd.htm
Also, here is some information regarding the "Live seasons" feature:
http://www.fifasoccerblog.com/2008/08/exclusive-fifa-09-live-season-pricing.html
All looks very impressive to me, looks like they have fixed all the annoyances from FIFA 08 and added more, can't wait to play it

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One league is free for the season, and others cost either ?4.99 each or ?12.99 for the lot - not too expensive, but as I don't follow foreign football much, just the Premiership will be fine for me

. Very good feature I think.