4.0

A wide variety of projects. A larger range of sizes, which is a big bonus!
Adorable coffee-esque names to the patterns.

Patterns range from easy to advanced. Each pattern has a little blurb that often explains why it is a good pattern to knit in a coffee house (i.e. easy of pattern/repeats, etc) , others are because they exude the comfort of a coffee house.
Some patterns contain charts--in these instances, you must be comfortable reading a chart, as they are not written out. I can go either way, so it's not a deal breaker to me.