This was a prototype tech demo from 2003 for the since canceled Van Buren project worked on by Black Isle Studios.
This tech demo is very buggy, and is not at all related to the actual Fallout 3 product being developed by Bethesda Studios.
I'm still unsure of what Bethesda is going to do with Fallout 3. Changing from isometric veiw to full 3d is pretty much a given, but if they take out the turn-based goodness that was the heart of Fallout's combat, I probably won't buy it. Call me old school, but games like Fallout and Xcom are made for turn-based play, not real time.