These days, I rely on my students and newspapers to learn about new music. Chief among these new singers is Laura Mvula. Her music has strong rhythms, she looks singular, her voice is strong, and her music bear a strong message. Take a look at That's All Right.
The second singer I heard about recently is Jessie Ware. Less "message-y," but still a captivating singer.
The one I like of these new singers is Lianne La Havas. She reminds me a bit of Cassandra Wilson: a deep female voice overflowing with energy and power. Give her Is Your Love Big Enough a listen.