Rumor: $50 price cut coming for the Xbox 360??

This gets double question marks because the source is the Hollywood reporter. Supposedly they have a retail insider who told them Microsoft will shave a cool $50 of the price of an Xbox 360 starting August 8. However, they did not specify which version will get the $50 price drop. Will it be the 20GB Pro package, the crippled core unit or all three SKUs? If their information is accurate the price drop comes at a good time, right before Blue Dragon and Eternal Sonata.