A key Samsung executive has just confirmed that the upcoming Galaxy F foldable handset will ship with Bixby 2.0's successor. However, he also added that the company has not decided yet if the next-gen virtual assistant will be branded as Bixby 3.0, so in the end we might get Bixby F or something completely different.
https://www.notebookcheck.net/Bixby-3-0-confirmed-to-launch-with-the-Samsung-Galaxy-F.365736.0.html