WELL, IF YOU JUST FEEL THE URGE TO GET ONE, you can order it on NewEgg ($799.00) or Amazon ($799.99).
Intel has introduced the NUC8i7HVK follow-up to the Skull-Canyon NUC, sporting an i7-8809G CPU+GPU. It's basically a 4-core processor (3.1GHz-4.2GHz), combined with AMD Radeon RX Vega M GH graphics (1.063GHz-1.19GHz) strapped with 4GB HBM2. And it is rated at 100W...yep, toasty.
Honestly, you'd be much better off buying a decent gaming laptop with, say, an Intel 7820HQ / 7820HK / 8850H, and a discrete GPU - like the GTX1060 or higher (the standard version, not the crippled Max-Q). For roughly the same price as a barebones Top-spec NUC, you'll be getting a complete laptop, while the NUC will require extra spending on RAM, storage, OS, wireless keyboard+mouse, etc...
Also, keep in mind that under sustained heavy loads (gaming and such), it will probably throttle its clocks down a lot to keep temps in check.
I'd wait for the price to go way down (under $580), or just wait for the next one which should feature HDMI 2.1 48Gbps, Bluetooth 5.0 and 802.11ax (AKA WiFi 6).
On Amazon, you can even buy it pre-configured with RAM, SSD & Win10 Pro, but it'll cost you a pretty penny...
* ✈ International shipping available.