Got the new iMac 5k and the display and performance is phenomenal and I am spoilt with the resolution and graphics. But a few things are bothering me and want some advice: 1. My primary laptop is Macbook Air (Mid-2012) with Thunderbolt 1 and I use it at work with a 4K display and at home with my dual dell monitors. 2. There is not Target Bridge Mode for the Air with the new 5k and VNC output is horrible and I would not be able to use it at all. The iMac 5k has just Thunderbolt 2 ports on it. 3. From what I read so far, the ability to drive 5k displays from the MacBook or Macbook Pro's will have to be with Thunderbolt 3. So planning out for the next 3yrs(considering all in, this would be ~$4k+ investment); should I keep the new iMac 5k and hope that when the new Macbook's or Pro's come out, I will be able to connect them to the 5K iMac to use as a display? What bothers me is the lack of clarity around the iMac 5k having the ability to become a display to the new Macbook's which may have Thunderbolt 3 and not being backwards compatibility with just having Thunderbolt 2 ports. Any advice? Should I just wait for both the iMac and Macbook's have Thunderbolt 3 and then bite the bullet?