Can anyone point me to someone (a confirmed owner) who is "outraged"?
Early adopters get stiffed.
360 didn't dip below $299 for 2 years ($279 Core) when they were phasing out old (RROD ridden) models, and introducing the Arcade, Premium, and Elite.
PS3 didn't dip below $499 until 1 year after release with the 40GB model.
Wii didn't drop price for 3 years.
PS2 didn't drop price for 2 years
XB/GC dropped price in 6 months, but the PS2 was just in utter domination of them
But for the most part, the early adopters haven't been stiffed. There's a significant amount of time between launch and the first price cut. Sure, the people who buy consoles a month before the first price cut get the short end of the stick, but there isn't much other precedent to say that early adopters always get stiffed (unless you think nobody should buy a console until a year after launch to take advantage of a price cut. Because that sure would look good to MS/Sony/Ninty stockholders and developers). But in the case of the XBone getting a price cut within the first 3 months? That is stiffing the early adopter.
But in the grand scheme of things, it's only the UK. Ultimately, it's not that big a deal, since the prices are the same everywhere else. Plus apparently, the XBone is just "on sale" for the TF release, instead of being an official price cut.