BB has been rigorously tested on Grandanet for the past 3 months in stable condition; stable enough for us to comfortably announce a public release.
One difficult task in testing on Tezos test nets is using the faucet to get testing tokens. This requires some linux command-line skills and basic knowledge of Tezos to activate multiple testing accounts to build up enough funds to become a baker. (yuck!)
To encourage more testers of BB, we asked for 500K XTZ from one of the developers to be used for faster funding. tz1XkXHbaconJQ7mq8akY9aThZVEQBQbskcg
If you want to become a baker on the test network using BB, please download BB, go through the wizard, and then request 8010XTZ from the funding account by using this form: https://forms.gle/iuSuWprvhejCGKP56
If you discover issues with BB, please open a github issue with the complete logs and describe in detail what went wrong.