IGN Brings us further updates as to the compatibility of the various guitars soon to be in circulation.

From the article:
‘Harmonix develops and bases all of our games, guitars and other peripherals on open standards established by platform manufacturers such as Microsoft and Sony. Rock Band is no exception and supports an open controller standard. Guitar controllers are like any other standard game controllers–the controller sends a signal back to the game depending on the buttons you push. If a third party game controller is based on open standards, then it should work with Rock Band as well. If certain controllers do not work with Rock Band, questions about those controllers should be directed to the peripheral manufacturer. In addition, we welcome any 3rd party software that wishes to support Rock Band guitars. If a 3rd party guitar / music game does not support the Rock Band guitar controller, questions regarding this should be directed to the game manufacturer.

The official Rock Band guitars and peripherals are custom designed to help players to blur the line between playing a game and being in a band. Harmonix has modeled the guitar on a Fender Stratocaster and engineered the strum bar so it feels like you are playing a real guitar. We have ten fret buttons–5 on the top and 5 on the bottom—and have even built in a five-way effects switch that interacts with the game. Obviously the players have a choice, but we truly feel that once they play Rock Band with the Stratocaster, they will not want to use any other guitar controller.’