While the last Star Force game came in three different "flavors" (Dragon, Pegasus, and Leo), Mega Man Star Force 2 will only have two versions to choose from (Zerker x Ninja and Zerker x Saurian). Depending on which iteration you choose to buy, Mega Man will have different powers. The Zerker element (which is in both games) will give Mega Man a lightning-powered sword, the Ninja element will increase his speed and let him throw a big Shurikan, and the Saurian element will give him the power of "explosive fiery fists." As for the storyline, the game will take place two months after the ending of its predecessor, and involves a new trouble-making character named "Rogue."
Other than that, the characters, graphics, and battle system appear to be the same or similar, meaning that if you enjoyed the first Star Force title, you'll probably like this one too (and vice versa). The online component sounds slightly deeper, though, allowing you to either battle, share cards, share upgrades, or aid in transformation upgrades.
The game is scheduled to hit the DS in June, so those of you anticipating it won't have to wait all that long.
[Via GamesPress press release]