I believe real-time raytracing will change everything once cheap hardware can do it. It may take a while to get it on mobile, but for PC and consoles, I'm not sure all AAA in 10 years will have old fashioned light maps.
Depends on what you mean with 'lightmap' - if you mean the classic Quake 2-style slapping of colored textures on top of diffuse textures, sure, probably that wont be much of a sight in 10 years. However even nowadays (or years ago, really) most lightmaps contained more than that (e.g. at minimum you'd need directional information) and i doubt raytracing will get rid of the idea of precalculating lighting information per surface, especially as raytracing hardware becomes more programmable.
