The MCU's Blade will undoubtedly feature current and new Marvel characters in its cast, despite still being in early development. The reboot was first confirmed during a Marvel Studios SDCC panel in 2019 and has faced various obstacles since, with its release date now pushed back to September 2024. However, given that Marvel Studios have not yet provided a concrete plot or cast for Blade, there's plenty of room to speculate which characters will appear in the film.
https://screenrant.com/marvel-characters-appear-in-mcu-blade-reboot/