Maintenance on 8 May 2012 will release the Collision Chaos on the US version. https://www.facebook.com/GalaxyOnlineUs
More details on the features aside from the other blog post: http://forum.sns.igg.com/viewtopic.php?f=23&t=24491
P.S. At the last screenshot of the thread, there is a Reverse Cloaking Device.