Will the game be released on a different OS (Macintosh, Linux, etc.), or on other video game consoles?
Guild Wars was developed and initially released on the PC. We are aware that there is an interest in having the game available on other operating systems or other platforms, and we will continue to evaluate these possibilities in the future.

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Currently, Wine has ported the game Guild wars to run in Ubuntu with some bugs. Making it run involves having a well supported video card, in addition to finding a good tutorial online for tweaking the wine options to support it.

It seems to me like it would be good for companies to support free software(Ubuntu) in order to sell to a broader audience. Windows costs more then twice as much as their game. Buying a computer off the shelf with Ubuntu instead of Windows is going to be much cheaper.

Here is a group of people that have started a petition. All you have to do is click sign this petition.

Guild wars in Ubuntu Online Petition