Yes, all Marvel movies are parts of the thousands of movies and series that will be made available to subscribers in the first year of Disney+. In fact, you should be expecting to see some Marvels movies like Thor: The Dark World, Iron Man 3, Captain Marvel on Disney + on its launch day. Also, subscribers will be able to see Avengers: Endgame in December. While MCU movies are definitely going to be shown on Disney +, however, what subscribers on Disney + should not expect are the various movies of Marvel that are yet to be released.
For instance, subscribers should not expect movies like Black Widow, Jojo Rabbit, WandaVision, Loki to be released to Disney + this year. However, the surest thing is that these movies will be made available to Disney + for their subscribers to see when the time comes. It is important to note that a price of $6.99 needs to be paid before Disney + can be enjoyed for a month.