At this point I'm not too concerned about the size. If it is about the size of Cyrodiil that should quite large. The smaller than Morrowind comment is probably not accurate.
Wasn't Fallout 3's world also MUCH smaller than Oblivion? Never ever did i feel the world was too small, and i highly doubt Skyrim will be smaller.
Fallout 3 is smaller than Oblivion, I don't know about much smaller. But for me, particularly after several play throughs, Fallout 3 seems much smaller.
One thing about Fallout 3 is that the explorable area is pretty close to rectangular. Vs Morrowind and Oblivion which have a very irregular shaped area, making it difficult to calculate the actual size.
The number often cited for Cyrodiil's size is 16 square miles. But in counting up the cells it appears to actually be something like 7 square miles or so. Still it's very large. But sizes based on square mile estimates can be very misleading.
I'm not worried. Oblivion was big, sure. But much of it was automated. ...
A persistent rumor that is just not true. Exploring Oblivion shows that it is clearly not "automated". And lots of "personal touches" too. Except for the planes of Oblivion that were "automated"