Akai Katana Shin for the 360 was announced at today's Cave Festival. It will be released on May 26 and come in both standard and limited edition versions. First print copies will receive a DLC card for a newly-recorded voice add-on. The game will have 16:9 support, HD graphics, new gameplay modes, and new stages. No mention of region-lock status.
DeathSmiles for iOS was also announced.
No other shmups were mentioned; they might be saving an arcade shmup announcement for AOU, I'm guessing. There will also be an XBLA vertical and horizontal scroller called Nin Nin Jump forthcoming, and their adventure game is called Instant Brain--no platform announced.
I was hoping for Ibara and Ibara Kuro, but no luck there. Also, no mention of the M2 Dangun Feveron port that we saw a while back.