Famitsu notes all of the levels from the arcade version of BlazBlue: Continuum Shift will be in the game plus new ones for the home version and redrawn classic stages. If you like to fight in with background variety Continuum Shift is the game for you. Click over to Famitsu to see them and pictures of μ-12.
Arc System Works also summarized all of the modes in the game.
Legion (taken from BlazBlue Portable; has players capture nodes on a map)
Japan gets BlazBlue: Continuum Shift in “early summer”. So far, Aksys has not announced plans to publish Continuum Shift in North America.