A new MacBook Air and MacBook Pro Retina are reportedly in the pipeline for the Apple giant, with updates expected in June. 

However, GottaBeMobile says the MacBook Air release may not make Apple's annual Worldwide Developers' Conference on June 2 at Moscone West in San Francisco. 

The website quotes as its source Ming-Chi Kuo of KGI Research, an Apple analyst who has been pretty accurate in past predictions.

Kuo speculates that a new 12 inch redesigned and "ultra slim" MacBook & MBPR upgrade is coming towards the end of the third quarter, possibly early into the fourth quarter. 

Kuo also predicts a lowcost iMac upgrade mid way through the second quarter and an iPhone 6 in the fourth quarter.  

Although it may miss the developers' conference, reports are still going for June as the most likely release for a new MacBook Air.

That would be the same month in the year as they announced the current MacBook Air last year. 

It is rumored that the MacBook Air redesign will affect buttons and the fan, while IBTimes Australia edition is reporting that the MacBook Pro with Retina display will have a new type of RAM that will make its performance "lightning quick".  

DigiTimes reported in March that Apple would be launching a MacBook Air with Retina display in the second half of 2014. 

A late release in the year will get the devices on store shelves just in time for the Christmas surge.