Branch 2.0 comes as a separate product with the brand JS7 JobScheduler. Branch JobScheduler 1.x will be available in parallel for around two years. 
We strive for continuity in our release planning, see How long will you support the different versions of JobScheduler and YADE?

With the first release of JS7 JobScheduler 2.0 a limited set of features is available that is intended for new users of the product who aim at high performance in larger scheduling environments. Users of JobScheduler 1.x are recommended to stick to ongoing releases of this branch until full feature compatibility of branch 2.0 and respective migration utilities become available, see JS7 - Changes compared to JobScheduler Releases 1.x