Hangfire 1.8 RC / release

I noticed the Hangefire 1.8 RC has been out for a bit and honestly it sounds like it has some great features i am interested in but i had a few questions.

  1. Do we have an expected release date as it seems like this version has been in the works for a long time?
  2. Is it backwards compatable with the existing storage providers as it mentions so new methods on the storage providers. I am interested in using it with Mongo since that is our primary DB already but i was worried the RC may not work with the current Mongo storage provider.
  3. Are there any major issues or reasons to not use the RC that have been found so far?