Being highly pessimistic about Particle’s promises ever since the deprecation of Xenons, I’m assuming it’s going to be limited to 1.5.x, which is NOT what was in the original announcement.
I’m not using any Cloud functions, just mesh. It’s a local mesh, and it’s far more useful than BLE, which is limited to 3-4 devices at the moment I believe. Depends on your use case of course.
The major problem with mesh is that by the end of the year, you won’t be able to create new meshes, the CLI tools will be disabled.