This rumor is like saying it will rain somewhere in the world during the first half of 2011, but DigiTimes reports that Apple will launch new MacBook Pros and iMacs in the first half of next year. The iMac was last updated in July 2010, and the MacBook Pros last received an update way back in April 2010, so updates to both those lines in the next six months shouldn't come as a shock to anyone.
As for details, DigiTimes doesn't have many except there will be "at least four upgraded MacBook Pros," and the new iMacs will feature "a new panel size and a price point for the mainstream market." Personally, I'm hoping Apple drops the optical drive from at least