It looks like Pioneer will be the first company to release a line of 4K Ultra HD Blu-ray drives for PCs. Pioneer in Japan announced two models that are expected to go on sale later this month, both of which stick to the standard half-height 5.25-inch optical disc drive form factor. However, both also require Windows 10, at least 6GB of system

Source: Hot Hardware – Pioneer’s New Ultra HD Blu-ray PC Drives Require Kaby Lake And Windows 10 For DRM