Chadwick Boseman will lead his own solo franchise starting next year, but a connection to Black Panther and Wakanda appears to have been revealed for Avengers: Infinity War. Boseman previously debuted the current Wakandan king in Captain America: Civil War, and it will be his solo film that is the final MCU installment before the mega team-up. To this point, there has yet to be any indication that Black Panther will heavily set up Infinity War, but that does not mean that the timing isn't perfect for the projects to connect in some way.
Backstage has revealed a casting call for stand-in roles on Infinity War. The listings are for a female with a dark complexion between the ages of 20-49 with a shaved head, as well as for multiple African-American males between the ages of 21-49. With Black Panther recently wrapping, this may be evidence of Wakanda and Black Panther on the Infinity War set.
The female description could be a match for Danai Gurira's Okoye, but could also be for a variety of different actresses. The looks for Lupita Nyong'o's Nakia or Letitia Wright's Shuri have not yet been made public and the age description does not help narrow a search. In either instance, this casting call confirms that audiences will see much more of Wakanda shortly after Black Panther ends. As for who this stand-in will be for, it may only be future set photos or celebrity sightings that indicate the other cast members who will be joining Infinity War.
One of the male stand-in roles is surely for T'Challa, but with multiple roles being requested, it could point to other Black Panther cast members also appearing. Will Erik Killmonger turn good and allow Michael B. Jordan to reprise his role? Or, could this call be for Sterling K. Brown or Daniel Kaluuya? These are all options, but so is the possibility the other stand-in roles are just for background actors and extras. Again, it will be up to future reports to reveal who exactly will feature in these scenes.
With Black Panther's world set to be integrated into Infinity War, it shows just how massive this film will be. Earth as a whole will already be at stake, and with Asgard, the rest of the cosmos, and now Wakanda at the Russo brothers' disposal, there will be hardly any time to rest during the film's runtime.