Congrats on making it to the final round!
Yes, absolutely - you should expect a case as well as fit questions.
The case in the final round can be a bit unstructured (without exhibits) and more focused on brainstorming, creative thinking, and putting you on the spot. They can also ask some brainteasers (something along the lines of how many golf balls fit in an airplane, etc).
The fit questions will be similar to what you would have answered in Round 1 but be prepared to go a bit more detailed into your answers as the partners might want to clearly understand your motivation, or your contribution to past work experiences.
I have done quite a bit of research on MDL Amsterdam, so if you would like further insights, feel free to reach out via chat.
All the best!