Mac OS X 10.5 'Leopard' seems set to ship in mid-April, said Piper Jaffray analyst Gene Munster.

A report on investor website SeekingAlpha indicates the analyst believes Apple to have sold slightly fewer Macs than it shifted during its December quarter. The analyst estimates 1.45 million Mac sales.

Citing checks with US Apple resellers, Piper Jaffray says 85 per cent of resellers expect Mac sales to decline slightly this month in comparison to those in December 2006.

The report suggests users are delaying their purchase of a new Mac while they wait for the new Leopard OS to ship.

Munster yesterday predicted that Apple will sell two million Apple TVs this year, observing that every 500,000 units sold above that target will add 2 cents per share to his estimated Apple 2007 earnings of $3.11 per share.

The analyst holds a $124 price target on Apple stock.