Digitimes briefly reports that Apple will be releasing updated notebooks "in the near future", with supply chain sources indicating that Apple's orders will rise 20% in the second quarter compared to first-quarter production.The new MacBooks are only expected to receive specification upgrades to Intel's latest Haswell platform and are estimated to be unveiled at the Apple Worldwide Developers Conference (WWDC) in June, the sources said.Claims of a 20% increase in orders come less than a month after the site claimed that orders would see a 10% increase for the quarter, although overall notebook shipments for 2013 are expected to be flat or only slightly higher year over year due to a lack of major updates and a weak PC market.