I just bought an Atmel-ICE and out of curiosity I popped the covers to see if it had an improved connector. I don't know what the old, apparently flimsy one looked like but I'd say this must be a newer, stronger one. At least it looks to me like there are at least a couple of tabs that pass through the pcb. Anyone who knows for sure feel free to comment on this. The date on my case is April, 2016.
I thought I'd share this in case anyone considering buying one of these has any anxiety about the horror stories regarding connector breakages. (Added picture- JS)