Samsung Galaxy S5 Prime with more-HD-than-HD screen launching soon?

Samsung is rumoured to have a version called the 2K Galaxy S5 Prime up its sleeve. As the name suggests, it'll have a 2K screen, also known as QHD (as in "Quite High Definition", no, okay "quad HD"), packing 2560x1440 pixels rather than the current S5's 1920x1080.
Apple's iPhone 5S, by contrast has 1136x640, and that's generally considered pretty hi-res.
Within Samsung's hallowed halls, the 2K Galaxy S5 Prime is said to be known by the codename 'KQ', with the model number SM-G900. A handset with that model number was recently spotted on a shipping database. It's reportedly being used for research and development purposes.
So why not launch the S5 with the better screen in the first place? That was the plan, according to SamMobile, but it was abandoned due to production issues. These are currently being ironed out, and the hi-res S5 should be with us this year.
Meanwhile, the International Business Times adds that the S5 Premium or Prime, as it may be known, will also feature a faster processor - an Exynos 5430 octocore with four cores running at 2.1GHz, four at 1.5GHz and a 600MHz ARM Mali GPU and dedicated Seiren audio processor mopping up any survivors. As ever with Samsung, whether your particular market will get this chipset or some other variant remains to be seen.

Samsung isn't the only manufacturer rumoured to have a 2K screen on the way. LG's next flagship, the G3, is said to sport a display with the same resolution. And where these two South Korean giants lead, everyone else usually follows.
Sources SamMobile , IBTimes