Well usually when you shoot the video of a song, you've planned its release date (for the song at least). Since AO video was shot 8 days before FFS video, I think everything was planned for months, that's why I think the 24th thing could be real. We'll have the answer in around 12 hours anyway.
Elle from RDaily also kinda confirmed the 24th thing...
Also she does understand that she's got 0 chance of getting a #1 single/album in the UK nowwithout Spotify?.. that's one of the reasons why FFS didn't go #1 in the UK because it wasn't put on Spotify straight away.
One of my favourite Rihanna singles, plus it hasn't aged a day I really hope its on the next tour, but performed with a guitar I love her live vocals whe she performs this.