From RogueBasin

The 2013 Annual Roguelike Release Party (ARRP) will be held on the 21st and 22nd of September 2013. This is nearest weekend to 6 months after the 2013 7DRL competition. The aim of the weekend is to encourage more releases and updates, from minor bugfixes to whole new games. Don't let your game sit in the shadows as you tweak and polish - come join the party!

Those who plan to participate are encouraged to declare their planned releases. Announcement is not necessary though - simply releasing your game or updating on the above dates is required to participate.