New promo released today by Showtime:
Nothing new really, but interesting that there's no mention of the events of the last season. Perhaps they plan on running the promo during rebroadcasts of the last season and don't want to spoil it.
Also, Colin Hanks has signed on to join the cast next season:
http://www.tvline.com/2011/05/dexter...anks-spoilers/
No word on what his role will be. Apparently, there won't be a "big bad" like in previous seasons.