Yes, you read correctly! Biotron is going to be featured on Qryptos! We are excited to announce this as it is one of the strongest exchanges. You can read when and why here.
As for your question regarding the remaining tokens, they are going to be added into the "user acquisition pool". That pool is then going to be distributed amongst our users in the future both as incentive, and as a token of gratitude.
that is actually quite a good exchange, good to hear you will get listed in there