This is the "standard" move order. 1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.e3 Bg7 5.Nf3 0-0 6.b4Actually, I prefer to invoke this line as White when my opponent tries to sneak in a Gruenfeld vs the Colle system:
1.d4 Nf6 2.Nf3 d5 3.e3 g6!? 4.c4 Bg7 5.Nc3 0-0 6.b4
For decades, Bagirov was a regular practitioner of this line. Tony Miles played it often, too. Taimonv and Alekseev have played it as well. Lately this line is making infrequent, but regular appearances in high level play.
White delays the fireworks of the Exchange Gruenfeld and steers the game into a contest of strategic maneuvering. Some say the line is sterile and drawish. Maybe it is, but such "sterile" positions have a way of separating masters! See for yourself.