IGN AU did a Preview yesterday and their Battle Mode impressions came with a video that shows off one of the SNES Battle Courses (SNES BC4 I think it was that was chosen) and Thwomp Desert (which seems okay, but not too great).
X-Play did a Preview as well and I spotted two new levels. A level by the pier/dock and some water level maybe with a "slide" I think... It was really quick.
Also, I have to show you guys the screen where I spotted Hammer Bro.