This is a post from the Rybka-Forum by "chessorpoker"
pretty much these are the facts how i see it:
1. people are asking questions and not getting answers
2. vas promised a Rybka 3+ update which has not been delivered
3. the Rybka4 release has been canceled
4. vas claims his code was stolen but wont/cant prove it
5. these new engines play nothing like rybka3 which is more mysterious
6. these new engines play better than rybka3
7. without rybka4 people are going to use the other engines
you can make up your own mind, but the fact is that vas and his team have let down their customers. i'm going to use free open source engines from now on and i think you all should too.