X11/DRM and Haswell Xeon E3-1276v3

[grarpamp]

Hello. Is there a status or community status/development/CFT
wiki pages [?] regarding support of integrated graphics on Intel
chips such as the Haswell Xeon E3-1276v3 P4600 (or P4700
as the case may be with this series) in 2-D mode, aka: native
3840x2160 at 60Hz DisplayPort 1.2? With any additional displays
pursuant to the digital and analog capabilities of the chipset?
ie: xeon-e3-1200v3-vol-1-datasheet.pdf

Could see people using this with just X11, xterms and 2-D
apps like plain old Firefox for a good workstation with....
 Acer B326HK
 BenQ BL3201PH
 SAMSUNG U32D970Q
but heard support for the on-die graphics was iffy or nonexistant
yet? Any successes?