Well, that may disappoint you a lot but GunSmoke Games is creating another game besides Something Unlimited, Bend or Break 2. So it is very likely that one game will have an update and another will not. This update will focus on ending the yacht halloween event and I don't know if there will be more, I don't think so. The next updates to Something Unlimited will be the contents of the old heroines, Black Cannary, Huntress, Hawkgirl, WonderWoman.. and it is very likely that it will have a lot of content, if these 4 characters are really getting new content. This update will be around April or May, and as GunsSmoke Games is creating its new game Bend or Break 2 it is likely that after this update we will only see SU content in September around there.
So, I noticed that GsGames makes its new content available on the 6th of the month. Then on Friday he should arrive.