Ah, that is not an official Debian version, just a version for Debian. Note that there are only versions for amd64 and i386 CPU systems. No ARM versions at all.
Debian rebuild the software from source for each of their supported CPU types and package it up with installation and removal scripts. Then it goes through various stages of testing until it makes it into the *next* version of Debian that will be released (currently called "Jessie"). It'll never get into Wheezy.
All this takes a lot of time, which is why Debian has a reputation for running old software. It also has a reputation for being very stable.
The current official Debian versions of Midori are shown here http://packages.debian.org/search?suite ... rds=midori
As has been said, you could always compile it yourself