Harmonix reiterates in the statement that it believes in an "open standard philosophy of hardware and game compatibility." The company says that such a policy is in the interest of consumers, game developers and console manufacturers and "will only help to grow the music game genre as well as inspire innovation and creativity." Harmonix says that on Tuesday, December 4 it was ready to release a patch approved by Sony so that Guitar Hero controllers would be compatible with Rock Band, but that Activision objected to the release and now Sony is holding onto the patch due to Activision's "continued objection." The full statement from Harmonix can be found after the break. The ball is now quite publicly in Activision's court.