Scroll back a couple pages @branespload went over it but for quick recap the nomin back pack is now a glorified laptop bag.
-new straps feels like it has a bit more padding from my experience and it covers the adjustable section now. Personally the new strap is a pain in the ass to adjust.
-The front compartment is now the main storage/where you shove all your stuff into in an orderly fashion. It opens up completely rather than opening up sideways. No more "floating" pocket.
-back compartment opens up asymmetrically now and has a quick access pocket on the top. Has a laptop sleeve and document holder. It's annoying how if you open the bag from the top you can only access the quick access pocket and not the rest of the compartment, you actually have to completely unzip it to access the rest of the compartment. Another annoying fact is that you can only access it the laptop sleeve on one side hence if you sling the bag from your left shoulder to your chest you can't access it whatsoever.
-no more side tab to hold it like a briefcase.
-top pull tab feels more solid now
-new shape is more rounded and "flatter"
Feel free to correct me if I'm wrong this is all based on my experience with the bag for a day and some reviews I've read online.