I'm pretty sure there will be more singles. It's Rihanna we're talking about, she's not shy of having lots of singles promoting the album. KIB and NM were just released, relax + there's also Calvin song on the radio now, it will take her about 3 months from now, but there will definitely be more singles.
ANTI-era singles run from now on should go as follow:
1. FourFiveSeconds (with Kanye West & Paul McCartney)
2. Bitch Better Have My Money
3. American Oxygen
4. Work (feat. Drake)
5. Kiss It Better - hopefully we'll get a color version for the video + a The Weeknd/Miguel feature remix soon to prevent it from disguisingly flopping, this song deserves so much better!
6. Needed Me - doing fine so far, it will probably end up being a solid top 10/15 hit for her in America
7. Love on the Brain - A MUST.
8. Sex with Me or/& Desperado - just great tunes that deserve good videos. hope she'll make something for them.
only after those she can continue to her next era.