So there was a leak I read this morning about there being a funeral scene for T'Challa in the new Black Panther movie wth is body in front of the Wakandan throne but now that I look again I can't find any reference to it.
Article also stated that Shuri and M'Baku may both be taking the mantle of Black Panther so we will see what comes of that.
While hunting for the article I read this morning I saw others pointing to Leticia Wright being recast as Shuri due to her old anti-vax tweets from last year coming back to bite her now. With how aggressive Disney has been with actor behavior online and off in the past (Cara Dune actress, Johnny Depp, and Director James Gunn) it sounds believable but we won't know for sure for a while more I suppose.
Found the article, never heard of this site before so probably need a lot of salt for this rumor.
https://cosmicbook.news/black-panther-2-leak-chadwick-boseman-t-challaAlso looks like the sites reporting the LEticia Wright recast are all salt ridden places like WeGotThisCovered.com