Online reports suggest that Apple will be moving the MacBook Air to the recently launched Intel Sandy Bridge chipset in June.
The shift will be part of a summer refresh for the line-up that is essentially using the same processor — in this case, an Intel Core 2 Duo — as when the MacBook Air was announced in January 2008, ZDNet UK sister-site CNET News said in a report citing sources "familiar with Apple's plans".
MacBook Pros are also said to be in line for an upgrade to Sandy Bridge processors according to the report but were expected to arrive sooner than the Air upgrade.
However, this is could well now be delayed due to a hardware bug in the Sandy Bridge chipset that could lead to hardware failure in a small number of machines.
Intel said that the problem would cost the company $1bn (£625.9m) to rectify when it brought the issue to light on 31 January.
A number of hardware manufacturers have since said that customers with affected models could return them for a refund or replacement.