Hi @MartynaWojtas;
Do you have any updates? For reference, Bitbucket have pushed their GA date four weeks, to no earlier than July 23.
I would greatly appreciate it if Bamboo made sure to not release on the same date (or week) as Bitbucket, since many of us have integrations across all products, and it is stretching our bandwidth when we have to test and release compatibility for several products simultaneously.