Mighty Switch Force, the spiritual successor to Mighty Milky Way and Mighty Flip Champs (DSiWare) was recently announced for the Nintendo 3DS' eShop in the July issue of Nintendo Power. The game is like the other titles in the series, but focuses more on action than puzzle solving. WayForward has mentioned in Nintendo Power that the main character's name is Patricia Wagon. Not much information is known about the game, but WayForward Technologies will update about it soon. According to Nintendo of Europe, the game will be released in Autumn 2011.
This looks good. I guess it's a candidate on the eShop that is worth downloading.