I'm in the market for a Mac Mini, and I'm looking at buying a display at the same time. But figuring out what the Mini supports is so confusing, especially after the 10.10.3 update. Apple's website shows that you can go up to 4k over HDMI, but capped at 24/30 Hz. Apparently over Thunderbolt / mini Displayport, you're capped at 2560x1600? But I'm pretty sure since the 10.10.3 update, I've seen reports of people running higher than that. But still supposedly at 30 Hz. Anyone have concrete info?