The Economic Daily News reported in 2015 that Apple will be releasing 13-inch and 15-inch MacBook models.
Digitimes, which sees Mac sales growing among slowing industry sales, adds the new MacBooks will share a design similar to the current 12-inch MacBook, but thinner than the current MacBook Air at a .68-inch and 2.38 pounds.
It's not clear what Apple's plans are for the MacBook Air, as it may look to the new iPad Pro announced on Monday to replace its smaller and cheaper notebook.
9to5mac points to the Skylake processor in Intel's CPU roadmap as being a prime candidate for the processor in Apple's new line of MacBooks. The Skylake is set to be more power efficient.
It's worth noting that Digitimes' track record is hit or miss, but it has been correct on several product cycle rumors in the past.