This image revealed that some areas were changing slightly.
Assist Mode confirmed.
This image and a few other ones have separate Japanese and English versions, and there are slight differences between them. Why? It's unknown.
This image showed that dirt walls had texture changes. This was big news at the time.
Menu screenshots
The first image I uploaded.
This image revealed that all 5 leaders had comments on the Piklopedia. There was a lot of theorizing early on about what these comments could be like.
No HUD
I didn't really need to upload all of these images, but I did it for the sake of completion.
This one has no HUD, but still has an arrow pointing to the fruit.
This image left a lot of unanswered questions. Why was there a cinder block, or a Cupid's Grenade, or a brick in the ground, or a SPERO?
August 28 Japanese website update
Website images
The wind effect looks different to how it looked in the original game.
This image was the most mysterious one in the August 28th release. What could those additional options in the background be?
Video screenshots
This next set of images was created by taking a screenshot of either the trailer or one of the demonstration videos, and then cropping and resizing the image.
Grass in the Tropical Wilds?
Camera angles like this certainly weren't possible in the original...
My favorite image from the set.
This confirmed that it wasn't just Dirt Walls getting texture changes.
This confirmed that there were actually object changes in areas.
This showed that the button was used to lock on. The changed lock-on mechanics caused a lot of speculation around controls.
This image was incredibly interesting at the time, because it showed an entirely new way of switching leaders.
This was also very interesting, as it showed that there was a way to charge with only 1 Pikmin type at a time.