Seems like it to me, more or less before. I just tested Left 4 Dead 1 on both my 27" i5 iMac and 11.6" MBA and plays much better than it did before. 10.6.7 was unbearably laggy and had erratic framerates for me. Everything seems smooth again in 10.6.8. Anyone under 10.6.8 on a new MBA, playing more modern games, please chime in your experiences!