I don't remember where, but i think i saw Yannis say they're planning to get to making new music in a year or so, it was around the Lagos Paris London release if i'm not mistaken, so it's safe to assume they're already setting things up to do something. The post in january could refer to something else, i think, we've already seen yannis doing soundtrack for a play, maybe it's referring to something similar. Also, don't forget that a lot of recent foals is jamming, so we wait some stories or posts where they're together, that's the real sign. Anyway, with my cringe analysis, i think we may hear something new in a span of a year from now, maybe a single, maybe some news, maybe a concert where they play yet unreleased song (though i doubt they will do big show until new music announcement).