At Apple's Worldwide Developers Conference (WWDC) on June 8, 2009, it was announced that the 13-inch unibody MacBook would be upgraded and re-branded as a MacBook Pro,[33] leaving only the white polycarbonate MacBook in the MacBook line.[34] It was also announced that the entire MacBook Pro line would use the non user-removable battery inherited from the 17-inch MacBook Pro.[35] The updated MacBook Pro 13- and the 15-inch would each have up to a claimed seven hours of battery life, while the 17-inch would keep its eight-hour capacity.[33][35] Some sources even reported up to eight hours of battery life for the 13- and 15-inch MacBook Pros during casual use,[36] while others reported around six hours.[37] Like the 17-inch MacBook Pro, Apple claims that they will last around 1,000 charge cycles while still containing 80 percent of their capacity.[38] Graphics card options stayed the same from the previous release, although the 13-inch,[39] and the base model 15-inch, came with only the GeForce 9400M GPU.[40] The screens were also improved, gaining a claimed "60% greater color gamut".[39][40] All of these mid 2009 models also included a FireWire 800 port and all except the 17-inch models (which retained the ExpressCard/34 slot) would receive an SD card slot.[28] The 17-inch model would retain its ExpressCard slot.[35] For the 13-inch MacBook Pro, the Kensington lock slot was moved to the right side of computer body.[41]
