Based on a leaked listing, South Korea will be getting a new phone with the model number SM-G900L and this naming scheme is in line with what will be the Galaxy S5 family. Based on this listing, the phone will get a 5.1-inch display and Android 4.4 KitKat out of the box, but it's only going with the same 1920x1080 full HD resolution as the existing Galaxy S4 smartphone. It'll have some new bells and whistles, but more pixels won't be one of them.
I can't say that I'm terribly disappointed. Many people can't see the difference between 720p and 1080p on regular-sized smartphones, so going from 1080p to 2560x1440 probably wouldn't be all that noticeable either. That being said, Samsung could still come forward with a version of the Galaxy S5 that rocks 2K and the SM-G900L just happens to be one of the options at the lower end of the S5 scale. Hopefully we'll find out soon.