Game Update 15 was first discussed with producers at FanFaire 2009, and is hyped as being the largest, most complex and most exciting addition that Star Wars Galaxies has seen in the past few years. Producer "Teesquared" had said, "This update will bring with it the most engaging GCW content we have ever put into the game," whilst teasing the content in his Producer Note in November 2009. Various aspects of this mammoth Update started to appear on the Test Center on the 3rd December. The first invasion took part on 16th December, with another two cities being fought for from the 7th January. The Update reached live servers on Tuesday 26 January 2010.