LG is going to be showcasing its first 4K monitor at CES next month, along with a 34 inch and a 29 inch monitor with an UltraWide resolution of 3440x1440.
The 31 inch monitor will be a true 4K monitor with a resolution of 4096x2160, which is slightly more vertical pixels than ASUS' 31.5 inch monitor, which has a resolution of 3840x2160. LG's monitor will have quite uncommon 19:10 ratio as opposed to the ASUS' monitor that has a standard 16:9 ratio. This might prove troublesome when watching movies, but for graphical designer more pixels most often equals a more "true" picture, and since this is who the monitor is aimed at, LG might have made the right decision.
Furthermore, the monitor will have a Thunderbolt 2 port, which enables data transfers of up to 20 Gb/s and allows dual-channel data transfers. To top it off, LG will ship the monitor with its True Color Pro calibration software to ensure that the monitor displays 99 percent of the Adobe RGB color space.
Prices and availability will most likely be announced at CES, so you only have to wait another month.