Images from E3 2002.

What she says is somewhat different.
The Island of Beginnings? Interesting name.
Pause screen looks pretty different. As you can see the D-pad served multiple functions. D-up took you to the map, D-right opened the item screen, D-down toggled the mini-map and D-left opened the Quest screen.
Wooden Baricades instead of small trees, check the AR section for info on how to play Outset Island with these in place.
Enemies appear as red dots on the map.
The Bokoblins are armed with sticks here, final version's are unarmed.
Link bounces off the wall instead of sticking to it.
One of those black holes.
There's the Z icon flashing.
The doors used to slide up instead of opening outwards.
The Bokoblin is armed with a sword instead of a stick. Apparently these swords broke after a few hits.
A different entrance cinema.
These originally cycled through red, orange and green and would drop hearts, item refills or rupees depending on what colour they were when you broke them.
Here a Bokoblin jumps out of a pot on the other side and breaks down the barrier, this doesn't happen in the final version.
It appears you were able to take enemy weapons through doors at this time.
Here the Grappling Hook could actually be used to damage enemies, it didn't steal items off them.
The E3 version of the Tingle Tuner. It could only drop bombs, call Link and follow Link.
And the GCN Tingle icon.