GarageBand gets a (RED) makeover for a good cause

A number of popular App Store apps are updating tonight with product (RED) branding, and adding in-app purchases (IAP) whose proceeds will go to help fund AIDS research. The promotion will last until December 7 and you can find details for each participating app's IAP in their App Store descriptions.

Apple's own GarageBand, for example, is introducing a new (GarageBand) RED Loop Pack, available as a $0.99 in-app purchase (IAP). 100% of the proceeds will go towards fighting AIDS. Third-party developers are also joining in the spirit of giving, with special levels, expansion packs, or episodes available to buy as (red) IAP.

Update: Apple has posted a press release outlining their participation in World AIDS Day.