Complex sentence: In September 2009, the "Slim" model of the PlayStation 3 was released, being lighter and thinner than the original version, which notably featured a redesigned logo and marketing design, as well as a minor start-up change in software.
Split into simpler sentences: In September 2009, the "Slim" model of the PlayStation 3 was released. It was lighter and thinner than the original version, and featured a redesigned logo and marketing design, as well as a minor start-up change in software.