Google announced that "Over next few months, we're rolling out a new release process to accelerate the pace at which Chrome stable releases become available. Running under ideal conditions, we'll be looking to release a new stable version about "once every six weeks," roughly twice as often as we do today." So why the change? We've three fundamental goals in reducing cycle time: » Shorten the release cycle and still get great features in front of users when they're ready » Make schedule more predictable and easier to scope » Reduce pressure on engineering to "make" a release."
"So, get ready to see us pick up the pace and for new features to reach stable channel more quickly. Since we're going to continue to increment our major versions with every new release (i.e. 6.0, 7.0, 8.0, 9.0) those numbers will start to move a little faster than before," stated Google.