It's a weird and likely unfortunate for #FE that both P5 and that game might be releasing very close to each other. If both games were published by Atlus, that definitely wouldn't be happening, but there might not actually be a choice here unless one of the two publishers decides, for some reason, to push their game out of the way of the other one for fear of cannibalizing sales. I don't think the fact that both games are on different platforms alleviates the issue by much, in this specific case.
For Persona 5: They've been doing some weird stuff when it comes to that game's marketing from the start, so it's hard to tell what comes next. Normally, I would think that they would publicly release PV02 (or an extended version of it) this month with a website update. Then a Famitsu/Dengeki PlayStation feature to go with that, which would lead into SCEJ's pre-TGS conference, which would then lead into a full on media cycle until the game's out.
For #FE: The schedule for Directs can be erratic, but the next time we hear about this could very well be through a Nintendo Direct at some point in August/September (which would also reveal the release date). After that, we could get monthly trailers showing off the big aspects of that game, along with the occasional character trailer, where things would ramp up with a few presentations and new details a month away from the game's release.
Etrian Odyssey V will definitely resurface at some point this year in some form, even if it's just a platform and release year announcement.
I think a new Atlus developed game will be announced at some point this year, too. If not, they'd be going into 2016 with their only announced game being EOV, which would be interesting.
Umm...is there a reason why this countdown was 5 years off? Or am I missing something very obvious?
Not sure, but I guess the countdown reset at some point after it initially ended because of a website update. Maybe that wasn't the first time, but there was 100+ days there at some point this year, and now it's over again.