I have two of these, one of the current version and one of the previous version (bought in 2013 if I recall correctly). They are almost identically, except that the new version has fleece lined pockets (the old did not), and the old version has both the laptop and tablet sleeve in the main compartment (new has them in separate compartments) which I prefer.

The reason I bought a second backpack (other than getting it for $30), was that I wanted another one for day hiking. However, I feel that the new version is aimed more towards being used as a school/work/travel backpack and not for day hiking. Having fleece lining, it is not as easy to clean and gets dirty easily. Just something to keep in mind if you are buying one specifically for hiking. Not a big deal but just something to point out. I ended up using the new version for work and my old for day hiking.