CS:GO developer in the near future can transfer the game to the Source 2 engine according to Valve News Network resources. Counter-Strike:
Global Offensive came out in August 2012, but still using a moving source that appeared back in 2004.
According to insides, CS:GO can be transferred to Source 2 in 2 months. Half-Life: Alix, a game from the Half-Life series for virtual reality glasses already use this engine.