Omega Force are developing Dynasty Warriors for 3DS, too. Dynasty Warriors Vs. is headed to the system in 2012. The game will have 4-player co-op play, but there’s been no mention of whether it’s online or local only. Here are screenshots:
Ishaan specializes in game design/sales analysis. He's the former managing editor of Siliconera and wrote the book "The Legend of Zelda - A Complete Development History". He also used to moonlight as a professional manga editor. These days, his day job has nothing to do with games, but the two inform each other nonetheless.