Complex sentence: As a part of a major relaunch, Nine Network reinstates its nine dots, and the dots are first 3D discs in 2008, then 2D dots in July 2009, then later spheres in September 2009.
Split into simpler sentences: As a part of a major relaunch, Nine Network reinstated the nine-dots logo in 2008. The dots were represented as 3D discs in 2008, then 2D dots in July 2009, then later spheres in September 2009.