Look at exactly 1:20 of http://www.youtube.com/watch?v=PjqsYzBrP-M.

Where is this? I've been to Solitude a million times but I don't think I've ever seen this particular area.

That's Katla's Farm, just outside of Solitude. It's along the road from the city to the docks.

I can't remember what it's called, but it's definitely there. Just go left instead of right when you are about to get to solitude and there's a fork in the road.

It is not the same as it is in the trailer. The windmill is in a different place and there's no wood chopping area.

That's the farm just outside solitude. But just like Gagnon said, it's not exactly the same as in the trailer.

Yes. Some of the places in trailer not exactly same in game.