Real-time info is available for NICE on the Transit app (at least).
I opened the Transit app today to see when the Jamaica bound n6 was coming and I saw that the real time icon was pulsing. It said 2 buses were 1 minute away, and 2 buses showed up 
. It seems to be working for most routes, but on the N6 it only seems to work for Jamaica bound buses at the moment.
Transit App: http://transitapp.com/