There are two 30" class 4K panels in the market now from Sharp and LG and they're in products both announced and shipping for testing, ranging from $3599-4999 at the moment. I expect Apple to launch a new Cinema Display to show off the triple 4K capabilities of the new Mac Pro. Maybe as much as $5000 each, maybe as low as $3000.
This is a halo machine. Some pros are already complaining about losing their expandable Mac Pro boxen for what is a Mac mini on steriods. Apple needs to show them something, and if you're a video/film pro, this could be it. I'd imagine a few big name Steven Spielbergs an George Lucas types have already been given a Mac Pro with triple 4K set-up for their private studios, so they can rave about it during a segment.
Maybe a more pedestrian bonded glass thunderbolt 2 display for the rest of us mortals, with a small price cut to 799.
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