Skirmish 17

dance210: Skirmish information normally goes up on the forums sometime Wednesday afternoon/evening (I am Eastern time zone, so it's Wed evening for me). At that point, even if a news article isn't posted, all the information and registration is available in the tournament section of the Portal.
If you are interested in doing the weekly skirmishes, I would strongly suggest checking the forums and/or Tournament page on Wednesdays; that should  give you enough time to get together a team and submit it before the Friday deadline.