Actually it does 4 and 5 axis right now using 2.5D.
3D is to be released later on.
The majority of machinists work using no more than 2.5D systems.
Most hobbyists want 3D - but very few actually need 3D, 2.5D is probably sufficient for the majority of the work.
When I was looking for A CAM package I wanted a 3D capable system because that is what most people talked about - but most of the stuff I do uses no more than 2.5D, and a lot is only 2D.
I don't do Jewellery design which needs 3D, turbine blades for jet engines (yet! lol) which also needs 3D, and sculptures as I cannot sculpt - and as I don't have a 3D scanner (yet) I can't reproduce a sculpture.
There are a number of professional machinists who still program their CNC machines by writing g-code at the console! And many hobbyists too! A CAM package such as Easymill provides machinists with greater efficiency and ease of use. It takes me a couple of minutes to launch Easymill, modify my design and generate new g-code. And, if I don't use it for a while, I don't have to go through another tuition class to relearn it.