While it obviously became The Legend of Zelda: Ocarina of Time, the early screenshots came out quite different in a few ways than the finished product. For example Link's shield has a totally different design.
He also doesn't have the Master Sword as an adult, and it looks like he's fighting Stalfos.
I kind of wish there were real enemies around Hyrule town instead of the zombie guys that walked like snails.
It also might seem like they were trying for a 3rd person-style shooting system for the bow and arrow in the beta. Thankfully that changed to first person in Ocarina of Time.
They also released a shot of the Triforce. Which led many to bring the image back up as a fake easter egg teaser. If you played Ocarina of Time, if you paid attention to the cut-scenes you would notice Link, Zelda, and Ganondorf all have one piece of the triforce the whole time.