Yeah the worlds are 36x larger then the ps3/360 version.
In other words
Still a million-billion times smaller than the pc version
Xbox version. 1 square km (1km by 1km)
Xbox1 version. 36 square km? (6km by 6km)
From middle of xbox version. 500 blocks to edge
Middle of Xbox1 version. 3000 blocks to edge.
It may be 36x bigger. But it won't feel like it.
On the pc version, I went in one direction for over 100km. (Nomad style!)
Minecraft is still my favor game of all time