E Ink just supercharged its color ePaper technology with Kaleido 4, doubling the color range and delivering the smoothest video playback the technology has ever seen. The improvements are impressive across the board: 15% brighter whites, 50% higher contrast, and a dramatically expanded color palette that finally makes digital ink look more like traditional paper in full color.

For years, e-readers have been stuck in the shadow of LCD screens—easy on the eyes and battery-friendly, but limited in color vibrancy. Kaleido 4 changes that equation, making color ePaper viable for everything from digital magazines to animated educational content. It's the kind of incremental-but-meaningful progress that suggests the technology we've been waiting for is finally arriving. Read the full story →

Today's takeaway: After decades of promise, color e-readers are about to become genuinely practical alternatives to tablets.