It's almost like I predicted it...wait a minute, I sort of did back in September (When cometh the $1,000 4K video camera?)
Am I unusually prescient? Unfortunately, no. But if past isn't prologue, then this is one of the worst cases of déjà vu, because Sony did a very similar thing when they starting releasing HD camcorders. First there was the HDR-FX1. Six months later, Sony announced the HDR-HC1, with an MSRP of $1,999.
This is the HDR-HC1:
And here's the FDR-AX100 camcorder they just announced:
Now as a 4K camera for doing a 4K production, I'm not that interested in this camera as I doubt I'll be giving anyone footage in 4K for at least a year...but I wonder what the 4K footage scaled down to HD will look like, and whether being able to crop the 4K picture when converting to HD will make this a useful tool.