Shacknews has posted a quick update which says that the title of the next Guitar Hero game is no longer “Guitar Hero Greatest Hits,” but is now instead “Guitar Hero Smash Hits.”
“Smash Hits will still feature 48 master tracks from previous Guitar Hero games when it’s released on Xbox 360, PlayStation 3, PlayStation 2 and Wii this June,” they say.
Not sure what the reason for the change is, though I imagine they might have seen the backlash over the title being a “rehash,” and so perhaps thought this title would seem less reflective of that. But, that’s only a theory.