On 7th of June (the release date of 1.19 The Wild Update) If you have either Java or bedrock you get an account for the other for free (If you already have bought both you don’t get anything.). They will still be separate games for now and if you go to the official message in the official minecraft Java launcher you can see more information!
P.S. Dear Aternos Team, please don’t remove the thread, some people don’t know this information.
Cheers, Me!