Just noticed that the home page of Stardog says it is a commercial RDF
database, however the intro page in the docs say that a community
edition will also be available. Just wondering if the plan to release
a community edition still on and if so can this copy be made available
for evaluation too?
Yes, the Community edition will be out ~4 weeks after the final 1.0 release.
There won't be a separate evaluation of the Community edition since it will be a strict subset of the commercial version.