The upcoming Topic Maps 2010 conference in Oslo on April 14-15 will feature a number of Ontopia-related presentations. There is a full-day Ontopia tutorial during the tutorial day, and also a half-day tutorial on using Ontopia with Ruby on Rails. There are also a number of Ontopia-related presentations during the conference itself.
The week before there will also be a meeting about Ontopia held by the Norwegian Java User’s Group in Grimstad, in southern Norway, on April 7th.
Ontopia's Blog 