All popular music originated from rhythm and blues.Country music was founded on rhythm-and-blues, a musical style that originated within African-American communities in the 1940s.
Beyonce's record is an homage to that so I would not expect to hear anything more contemporary-sounding from the rest of the album. It will be inspired by the roots of American music -- R&B, gospel, early and mid-century country, maybe even rock & roll.