Upside: there's a new Mega Man game! Downside: it's exclusive to the Japanese mobile market and unrelated to Legends 3. C'est la vie.
For DoCoMo cell phones in Japan comes Rockman: The Puzzle Battle, a reworking of the Blue Bomber's freshman adventure as a gem-matching game in the vein of Puzzle Quest. You deal damage to Robot Masters by aligning three or more gems; by beating a boss, you acquire his special weapon that affects the board in some way (e.g. Elec Man's Thunder Beam will clear all like-colored gems instantly).
The coolest part of this game is definitely the art, which stays true to the original NES sprite work while adding a touch of detail and shading. Maybe if Mega Man Universe sported this style, it wouldn't have been canceled! Just a thought.
After the jump is a gameplay video. It's of very low quality, but it gets the point across.
New Japanese Cell Phone Game: Rockman the Puzzle Battle [The Mega Man Network]
More Puzzle Battle Details, Plus Video and Music [The Mega Man Network]