Nintendo's final four months of 2022 theoretically has 3 games you can safely plant in it:
- Splatoon 3 in September
- Bayonetta 3 (probably, unless they spring an August date)
- Pokemon Scarlet and Violet
That's a heavy hitting line up, sales wise, thanks to the presence of Splatoon and Pokemon. But it's not quite the amount we should expect from Nintendo at that time of year. 2021, for example, had WarioWare, Metroid Dread, Mario Party, Pokemon, and Big Brain Academy in that same period. Go back to 2019 and you get a similar picture: Daemon x Machina, Link's Awakening, Ring Fit Adventure, Luigi's Mansion 3, Pokemon Sword & Shield all made it out in that same span; plus DQ11 outside Japan and Brain Training in Japan.
So yes, it's 100% certain that Nintendo haven't tipped their hand for later this year, but I'm not sure we're going to see a repeat of last year when they wheeled out an additional 4 unannounced games all for that period (even with the Advance Wars delay, the later announcement of Big Brain Academy led to the same result of 4 unannounced games appearing for the final third of the year).
Firstly, we already have (presumably) 3 games that make it out internationally in that window, versus just the one game in 2021 (Pokemon remakes). Secondly, we have 2 more games that could launch in that window; Mario + Rabbids 2 would be Nintendo-published in Japan, and Advance Wars would be published by Nintendo outside Japan (no word yet on a Japanese release). If you add those two to the picture, you're most of the way there.
If you then add the 2 most heavily rumoured titles to that period - Metroid Prime HD and Everybody Switch - then I'd say you're almost there, and potentially "that's it". And in terms of exclusive software, that would be 7 games coming in a 4 month period, and it would line up with what we saw back in 2019. I personally don't think Zelda ports are coming; not so close to Prime HD, and not when new Zelda potentially launches relatively early in 2023, which brings me to the next thought...
All that bet-hedging aside, I can't help but shake the feeling there is something else. A lot depends on when the new Zelda launches. If new Zelda is this fiscal year, then I don't see Nintendo preceding it with a Zelda port 6 or 7 months prior to the new game's release. Annual releases aside over the last decade, I simply don't think Nintendo would need to do that with Zelda and I think they'd rather save the ports given how long the development cycle for new Zelda is (and, so far, given the absence of new 2D games for the series). Relatedly, if Zelda is still in the fiscal year and launches in March 2023, then Nintendo round off their fiscal year with a huge, profit-boosting hit, and so there's less pressure to be even more aggressive late in 2022.
If Zelda is pushing into the next fiscal year, then I think late 2022 and early 2023 shift a little because of that.