That’s a great guess – 3 months away.
Technically Apple can’t push 5K Cinema display on Thunderbolt 2 which maxes at out at DCI 4096 x 2180, so we’ll need a MacPro or something with an interum solution like USB 3.1 with display port 1.3 for a 5K display to happen.
Thunderbolt3 could do it, but that’s 9 months away !
Blair Thornton
https://www.girafxmedia.com/
416 917-9740