Many of Zelenka's works have already been printed by various publishers and in the catalogue of Das Erbe Deutscher Musik there is an impressive list of works that are on deposit and await publication and performances. The link is:

In addtion to this there are probably other works that have been edited elsewhere and are not presented in this catalogue. My guess is that roughly 75-80% of Zelenka's music has been edited. This is quite an achievement in a relatively short time.

Hats off for the musicologists, they are doing a fantastic job!