that we will be present at this year’s FOSS4G, Free and Open Source Software for Geospatial (September 17-21, 2013 in Nottingham, UK), not only as a sponsor (http://2013.foss4g.org/sponsors/terrestris/), but also again with presentations (on SHOGun, GeoExt, GXM, etc.).
You have the opportunity to actively participate in the preparations by voting. Cast your vote at http://2013.foss4g.org/programme/community-voting/ until April 22, 2013.