Apple is staring down the barrel of a record-breaking sales for their iPad, with sales of 20 million in the June quarter, according to one analyst. Charlie Wolf with Needham & Company issued a note to investors on Thursday, where he has increased his June iPad shipment forecast.

His previous forecast was 13.5 million units, and he's increased this to a significant 20 million. Wolf does admit that his initial estimate in April was "hastily formulated", which is why his latest prediction is so much bigger. Wolf says:

In our view, it's only a matter of time before iPad shipments exceed iPhone shipments. The iPad is invading the business market at a much faster pace than the iPhone. In addition, the iPad will launch in China on July 20th. This should provide a significant boost in sales now that Apple is providing Chinese languages and services on its iOS platform.

If Wolf is correct, or even close, with his 20 million iPads sold prediction, it would be quite the achievement for Apple. Considering the same quarter last year they sold just 9.25 million, it would be a new record for iPad sales of any quarter, even beating the 15 million iPads Apple sold in the holiday shopping season of 2011.