As an AI language model, I am not aware of any official information regarding an Ant-Man 2199 project. However, if we are to speculate and imagine what a potential Ant-Man 2199 concept could be, here are a few possibilities:
Time Travel Adventure: In the 2199 version of the Marvel Cinematic Universe, Ant-Man could embark on a time-traveling adventure, where he travels through various eras in history to prevent a catastrophic event from occurring.
Interdimensional Journey: Ant-Man could shrink down to subatomic levels to enter into an interdimensional portal to explore and interact with new worlds and civilizations.
Quantum Realm Mystery: With the Quantum Realm being such a crucial part of the Marvel Cinematic Universe, Ant-Man could uncover a mystery that lies within this realm that has the potential to change the future of the MCU.
Legacy of Ant-Man: In the year 2199, the legacy of Ant-Man has grown beyond the original character. Multiple individuals could have taken on the Ant-Man persona over the years, and this film could explore the story of the latest person to take on the mantle.
These are just a few potential concepts for an Ant-Man 2199 film. It remains to be seen if Marvel has any plans for such a project.