As Aki-at said, after the VF anniversary was such a fizzer, I wouldn't expect anything at all for V-On. Might be surprised, but I also might win the lottery.
As for Bayo, if anything Nintendo will be showing that off, not Sega.
I forgot about Guilty Gear XRD, but I think that's far too early to be showing at consumer shows. Also it would depend on ATLUS/Sega doing the port. I am keen to see how that game develops though
I would even be excited for some more HD releases of classics like Skies of Arcadia and Shenners, maybe even JSRF since the first is out now?
It's such a shame Sega had such a spotty history with ports and remakes, from the horrendous stuff like Crazy Taxi and SC5 to the sublime JSR re-release. If they have the JSR guys on board still would be great to see more ports coming from classic DC titles (Steam please!) Not to mention, I would buy Crazy Taxi on Steam if they did the port properly and had the original music!