Whither African scifi?

Whence the “Afro” in “Afrofuturism”? In the 1994 interview with Samuel R. Delaney that inaugurated the term, Mark Dery defines Afrofuturism as “speculative fiction that treats African American themes and addresses African American concerns in the context of 20th-century technoculture—and, more generally, African American signification that appropriates images of technology and a prosthetically enhanced future.” This would suggest that the “Afro” in Afrofuturism is the “Afro” in the old-school census classification, “Afro-American” rather than, say, the “Afro” in the newer-fangled “Afropolitan,” the word that Taiye Selasi coined in 2005 for “the newest generation of African emigrants … [with a] funny blend of London fashion, New York jargon, African ethics, and academic successes … ethnic mixes … cultural mutts … multilingual … Africans of the world.”