Original sentence: As of late 2008 only Olympus and Panasonic have a commitment to the Micro Four Thirds system.The first Olympus model, Olympus PEN E-P1 will be shipped in July 2009
Edited sentence: As of August 2009, only Olympus and Panasonic have a commitment to the Micro Four Thirds system.The first Olympus model, Olympus PEN E-P1 was shipped in July 2009