There will be a PostGIS 1 Day mini conference in Paris June 23rd organized by
Oslandia and Dalibo.
For Details: PostGIS mini conference English Details
and PostGIS mini conference French Details.
Speaker submissions are due April 22nd. Main focus will be upcoming PostGIS 2.0 which gathering from newsgroup a lot of people are already bouncing around.
Paul Ramsey (OpenGeo) will be speaking at PGCon 2011. PostGIS knows where you are?
and everyone will know where Paul is too.