The Debian Astronomy Working Group aims to package and maintain astronomy related software for the Debian/GNU operating system. We are planning a (one-day) debian-astro sprint at the DebCamp in Heidelberg, 14 August 2015. Debian "sprints" are developer meetings to work on specific parts and having fun doing so.
OpenBSD 5.7 was released on May 1, 2015. There are some big changes From previous versions: for instance the nginx httpd server was removed in favor of an internally developed httpd server, BIND (named) was retired in favor of nsd and unbound.
The "Exoplanetary Atmospheres and Habitability - Thermodynamics, Disequilibrium and Evolution focus group” workshop will be held in Nice at the Observatoire de la Cote d’Azur from 12 to 16 October 2015.