A new batch of HORI sticks are right around the corner and are up for pre-order - just in time for BlazBlue this summer! Like the official Street Fighter 4 Japanese sticks, they are essentially a HORI Real Arcade Pro 3 for PS3 and a HORI Fighting Stick EX2 for XBOX 360 both with BlazBlue artwork on the front.
What that means for those of you looking for a new stick is that the PS3 version has a higher quality joystick (Sanwa JLF) built in while the 360 version comes with a stock HORI stick. Both versions have stock HORI buttons so no matter which one you choose, you may want to prepare yourself to do a bit of modding down the line. As you will see the PS3 version is a bit bigger than the XBOX 360 version as well. Keep in mind that PS3 has a bigger customer base than 360 in Japan so this is probably the reasoning behind the different versions for each system.
According to NCSX, they mention that the PS3 version is actually an updated version of the HRAP3 so there may be more to it than we know but no details have been released yet.