The figures from Nielsen Netratings and comScore are not in as of yet, but Hitwise has posted their latest numbers for October, and they show Google closing in on the 72% mark.
According to Hitwise, Google now sits with 71.7%, up 0.54%, Yahoo is down 0.3% to 17.74%, and MSN is pretty much the same at 5.4% (up a miniscule 0.04%).
As Google grows ever so slowly month after month, it will be no surprise if they manage to reach the 80% point. Will Yahoo or MSN ever manage to steal back some of this market share? Not likely in the near future, but time will tell.