My WiFi often seems to automatically connect anyway if I've stayed at another property with the same WiFi router name (like HHonors or MarriottGuest etc) unless I remove it from my saved WiFi networks list. It might ask my room number once and that takes all of 2 seconds. Not saying it's a bad thing they are doing this but it's not exactly groundbreaking either.
Not that I use it much but I'd say the mobile key entry was a more notable innovation... I haven't started with IHG in a while but do they offer this? It'd be nice to see more hotels with fully integrated "smart" functionally such as controlling the lights, AC and even the coffee machine from your phone. I've been in a few that have attempted to integrate a few things (HGI was one I think) but it didn't work anyway. Of course that's a much bigger expense for the hotel