I also noted the new trend.

BTW The position can also avrive after 6.Bc4 
1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 g6 6.Bc4 Bg7 7.Bb3 0–0 8.h3 Nc6 9.Be3

I his notes to the game  Zhou Weiqi (2469) - Li Chao (2320) tell us that..
"This old way of playing the 'new Classical' is pretty much considered these days to be a little lame and White generally seeks pastures greener for this bishop. If it ends up on g5 instead then White isn't obliged to include h2-h3 so soon in his set-up but obviously he must be careful regarding the situation of his knight on d4."