Is pytorch mobile successor of caffe2go

I just read paper( in which facebook talks about running their model on devices. It is very recent from september this year but I see that they are still using internal tool “caffe2go” which was never open sourced.
The only talk about doing this and about this framework in this blogpost . As we have now pytorch mobile I assumed caffe2go is deprecated but facebook is still developing new products with it.

  1. Is pytorch mobile not stable enough to use on production and that’s why facebook still uses caffe2go ?
  2. Is pytorch mobile borrows concepts or shares some implementation with caffe2go ?