Originally announced with a planned second half of 2010 launch, today Google has narrowed the launch of its Chrome OS to fall. This, according to Sundar Pichai, Google VP of product management speaking at Computex. By our calculation that is sometime between 22 September and 21 December in the northern hemisphere if you want to take the man literally... and you do, don't you. Wonder if we'll see a Chrome OS tablet launch at the same time?