Price cut? probably not likely, but there are other options for Sony.
One big issue for Sony is the expansion of its online services which would greatly be sped up if Sony just included a headset with every PS3. It wouldn't cost much for Sony, mabey $20 a pop.
Also, I think that for now, Sony would be content with just selling more hardware than the 360 with the software gap between them slowly closing. So, a $50 price cut would probably be a bit of overkill, but perhaps they will include something like *another* game or what have you. Price cuts aren't the only option.