I hesitate to use the word 'deprecated' because it means different things to different people. We'll continue supporting Replicache but won't add new features to it.

Even if you don't think you'll need partial sync our experience is that almost all projects end up needing either it or permissions. Both of which are difficult with Replicache.

And if you don't need either of those, the the query-based programming model of Zero is just a lot more fun.