There should be a 4K monitor announced next week to support the Mac Pro which Apple states will support output to three 4K monitors simultaneously. See the graphics page for the new Mac Pro on Apple's web site.
I think you need to SELL.
You're way too impatient and too quick to criticize. Steve is gon and has been for over 2 years. So, move on. Even if he was still alive he would be the first to say you can't rush to market until you're 100% ready and confident with your product. Shareholders like you are never pleased.
It took the iPhone at least 8 years to bring to market. For you to sit here and think that you have *any* idea how far along they are, what potential roadblocks remain with content providers, or any other issues that may or may not exist, is awfully egotistical. And if there's one thing that Steve was *all* about, it was *not* bringing a product to market until the stars were aligned. And that's precisely what I expect the management team at Apple is waiting for.