The T2K collaboration has recently published the first ever observation (7.3 sigma) of an explicit appearance channel (nu_mu \rightarrow nu_e) with only about 8% of the total amount of approved data.
Aside from this great achievement, thanks to the relatively large value of the mixing angle theta_13, T2K has provided the first exclusion limits on the CP violating phase for the lepton sector.
In this talk I will briefly review the nue appearance results to introduce the strategy used by the T2K collaboration to extract the constraint on delta_CP. I will also show the projected future sensitivity to this parameter for both T2K alone and when T2K is combined with the NOvA experiment.