CAT estimates "the global-mean temperature increase above pre-industrial by 2100, with an uncertainty range originating from carbon-cycle and climate modelling."
It shows under "current policies" a range of 2.6 to 4.9 C with a global mean of 3.6 and with "pledges" a range of 2.3 to 3.5, with a mean of 2.8 C.
November, 2016.
Climate Action Tracker