There will be a 2.0.
We've been quieter publicly than I'd prefer, but we've been no less busy for it. Stuff that's going on:
1. We have a giant corpus of internal code at Google that we support and migrating all of that to strong mode while also iterating on strong mode itself is a ton of work. (Very few languages significantly change their type system after launch!)
2. The new dev compiler that generates cleaner modular JS is maturing and getting an increasing number of internal users. There's a lot of features to add, bugs to iron out, etc.
3. We are consolidating our tools onto a shared front end (lexer, parser, static analyzer). Up until now, we've had independently written and maintained front ends for the VM (in C++), dart2js (in Dart), and the analyzer for IDE support (also in Dart, but a separate codebase). Merging those into a single shared front end is a monumental amount of work since each of those targets has very different needs and hard performance requirements.
Hopefully soon we can start saying more about what's coming.