Regarding online play, which of platforms will have online play for Guitar Hero 3?
Online play will be available for Xbox 360, PS3 and Nintendo Wii. PS2 version of Guitar Hero 3 will not have online play.

What type guitar controllers will be shipping for Guitar Hero 3?
A wireless controller based on Gibson’s Les Paul guitar will be used for Xbox 360, Nintendo Wii and PS3. PlayStation2’s wireless controller is based on the Gibson Kramer Striker guitar.  Note that only the Wii Les Paul will ship with a white faceplate. Both Xbox 360 and PS3 Les Paul will ship with a black faceplate.

How is the functionality of the PS3 Les Paul wireless for the older Guitar Hero games (released on PS2)?
Correction: The new PS3 Les Paul wireless controller will NOT work at all with any of the Playstation2 Guitar Hero titles when played on the PS3. We suggest that you keep your PS2 console around to play the older PS2 Guitar Hero games. Using a PS2-to-PS3 USB adapter, GH1 will work on the PS3 using either the SG or the original PS2 wireless guitar.

For Xbox 360, will the X-plorer wired controller work on GH3 and will the Les Paul wireless work on GH2?
The X-plorer will work perfectly fine w/GH3 on Xbox 360. The Les Paul wireless will have 100% compatibility with GH2.

Which platforms will have the Guitar Hero 3 standalone game available for purchase?
Standalone Guitar Hero 3 game will only be available for PlayStation2 and Xbox 360.

Which of the new wireless guitars launching with Guitar Hero 3 will have removable faceplates?
The Gibson Les Paul wireless guitar for PS3, Xbox 360 and Nintendo Wii will all feature removable faceplates. The Kramer Striker for the PS2 will not have removable faceplate.

How many players does Guitar Hero 3 support?
Guitar Hero 3 for all platforms will support a maximum of two players.

Will Guitar Hero 3 for different platforms contain the same exact song list?
Yes.

For PS2, will the current SG controller and the old wireless controller be compatible for Guitar Hero 3?
Yes

For Xbox 360, will the play and charge kit work on the new Les Paul wireless guitar?
The play and charge kit will NOT work.

What wireless technology is used for the new Les Paul and Kramer wireless controllers?
Standard RF is used on the PS2 (via adapter) and PS3 (via USB dongle). Native wireless is used for the Xbox 360 Les Paul. As for the Wii Les Paul, the Wii Remote is used as the transmitter.

What are the details of online play and downloadable content for Guitar Hero 3?
PS2 will NOT have online play or downloadable content. PS3, Xbox 360 and Nintendo Wii will all have online play at launch. As for downloadable content, that has been confirmed for Xbox 360 and PS3 at launch. Downloadable content for the Nintendo Wii is currently TBA.
 

Will the new PS2 wireless Kramer Striker guitar work fine when used with all of the older PS2 Guitar Hero games when played on the PS2?
Yes

Which consoles will there be stand alone guitar controllers available for purchase at launch for GH3?
PS2 is the only platform that you will be able to purchase a separate guitar controller for. At this time, we do not have an eta or pricing info for all of the other consoles.

Will the new PS2 wireless Kramer Striker guitar work fine when used with all of the old PS2 Guitar Hero games when played on the PS2?
Yes

Will the new Les Paul wireless guitar for the Nintendo Wii require batteries?
No. The Wii Les Paul wireless guitar will be hooked up and powered through the Wii remote and won’t require separate batteries.

Which consoles for Guitar Hero 3 will feature support for widescreen (16:9) mode?
Guitar Hero 3 for the PS3, PS2, Xbox 360 and Nintendo Wii will all support this play mode.

Is Guitar Hero 3 online play possible between different consoles?
No

What batteries are required for the new wireless guitar controllers?
Two AA batteries are required for the PS3 and Xbox 360 Les Paul and the PS2 Kramer Striker. No additional batteries are needed for the Wii Les Paul.

Will there be cross platform compatibility between the different GH3 wireless guitars?
No. This question has appeared here and there and is mainly meant for owners of PS2/PS3 consoles.

Will there be lefty-specific guitar controllers released?
The guitars are being built so that the strap will work for both left-handed and right-handed players, but will still play better right-handed as they all do. There are no plans to make a standalone full lefty controller at this time, but the software does do lefty flip to compensate.