updated 05:05 pm EDT, Thu June 30, 2011
Could point to new machines in mid to late July
Best Buy has joined the list of retailers putting the basic MacBook on backorder. The company is currently estimating delivery of new stock somewhere between July 13th and the 27th, depending on the speed of shipping a person pays for. Otherwise the delay is said to be one to two weeks.
Apple is likely drawing down old stock and postponing resupplies until it can deliver new hardware. Updated MacBooks should switch to Intel's Sandy Bridge platform, as well as implement Thunderbolt ports. The delay may more strongly be connected to Mac OS X Lion, which is due to launch sometime next month. Any new systems will have to have Lion pre-installed.
Several Apple models are now in low supply. Beyond the MacBook, the Mac mini and the MacBook Air appear poised to be replaced, possibly all in the same timeframe.