Development of marketplace take a lot of time. It is necessary that everything work correctly at marketplace. That is why it is necessary to wait when everything will be checked and work OK.
I agree with you, sometimes it's better to wait a bit and see a quality product. This is much better than the team would have hastened with the release and then users found a lot of errors.
Marketplace is very difficult thing and it takes a lot of time to create and launch marketplace. Team of EDC can not predict the exact date of launch. Let's wait. We see that EDC team are doing a lot for development.