I'm expecting PS3/360 hardware cuts but since NPD doesn't provide weekly sales, Wii may have boosted alot in the week Wii Sports Resort was out. August will be telling in that regard. I suspect if Wii flatlines or drops in August, then yeah, we get a Wii price cut. No shame in it really, Wii came in Nov 2006 - one price cut in three years is unbelievable historically speaking.
Though if thats the case then the sales were pretty poor without WSR.