Cannonlake will be the next tick for Intel, it will be a 10nm shrink of the Skylake architecture. According to the leaked slide, the first mobile processors based on Cannonlake-Y and Cannonlake-U may hit the market as early as Q2 2016, which means Skylake would have a shelf life of just half a year in those segments.
Cannonlake-based Core M processors are anticipated to follow in Q3 2016 according to the slide, but traditional socketed desktop versions aren't expected until 2017. The information suggests there will be a Skylake Refresh platform towards the end of Q2 2016 and the introduction of Skylake-E processors around the same timeframe.
Source: VR Zone