I'm hoping for a new teaser. Full blowout at E3 and release in March 2021.
Similar path to the first game.
Oh right. I forgot that one of the trailers was at the Game Awards. Wasn’t that after the Zelda E3 though? Anyway so something could be there, but I’m not keeping my hopes up though.
They had some in-engine footage at e3 2014, then at The Game Awards 2014 they showed the first proper gameplay footage.
The Game Awards video is the one where Aonuma says he's sure Zelda will be out in 2015 and then Miyamoto says "No worries about starfox, it will arrive before Zelda next year." Then neither came out in 2015. xD
So TGA is certainly a possibility for Zelda, but can't say I expect we'll see it.
Predictions (Made July 2019)
LTD: PS4 - 130m, Switch - 110m, XBO - 52m 2019 : PS4 - 15m, Switch - 18.8m, XBO - 4.8m 2020: Switch - 22m (Peak Year)
Switch lite really screwed up my Switch prediction this year! Looks like it's going to be about 19.5m-20m for the Switch in 2019, 14.3m for PS4.