A picture of the LEGO Series 7 Minifigures (8831) have surfaced! Estimated availability is Summer 2012. The image appeared to have originated from the German Toy site at Spielwaren-hegmann.de. Thanks to forum member slacker and others for the news. (via Hoth Bricks)
LEGO Minifigures Series 7 (#8831)
In case you missed out seeing LEGO Minifigures Series 6, the German Toy Site also has a picture of it. Estimated availability is January 2012.
LEGO Minifigures Series 6 (#8827)