I think we'll see a proper Nintendo Direct next week:
it falls in line with the trend for Mini Directs to be followed by a regular Direct in less than 20 days, it'll allow them to announce a couple games, which is important since they set a trend about theming their whole booth at E3 around one majorly anticipated game and worked both times, hence they need to announce the game we need to be anticipating (even if it's already announced and we just need gameplay i.e. Pokémon/Metroid/Fire Emblem). This also allows them to prove investors that early 2018 isn't just about old games, there's still room in May alongside Labo and in June for games dedicated specifically to Nintendo fans.
Other than that I expect Nintendo's sales forecasts to be met, a big focus on Zelda and Mario outpacing previous instalments of each series, possibly a bundle announcement for Zelda (could also see that in the Direct since the DLC is complete and they could make a GOTY edition) to mantain momentum, either happiness due to ARMS being a milion seller new IP or some sort of disappointment since it was made by the Mario Kart team.
Labo will likely have a big focus too since it's opening to a whole new market








