After launching its first 4K laptop in the UK, Toshiba has just announced US availability. Stateside, it'll be called the P55T, but as before, it's a 15.6-inch laptop with 3,840 x 2,160 resolution. That's a staggering 282 ppi, if you're scoring at home -- compared to, say 220 ppi for Apple's 15-inch MacBook Pro with Retina display. Driving all those pixels is AMD's 2GB DDR5 Radeon R9 M265X discrete graphics, a 4th-gen Intel quad-core i7 CPU and 16GB DDR3L max memory. Another hook is Technicolor certification, which ensures that each IPS display is individually calibrated for accurate colors. Along with the included copy of Adobe's Lightroom 5, that'll appeal to photographers and designers -- though the rather anemic 1TB, 5400 RPM mechanical hard drive is a letdown. It'll arrive on April 22nd at $1,500, a price that seems competitive with the few other 4K laptops. Meanwhile, Toshiba also announced some more mainstream models -- hit the break for more on those.