Here’s a link to download the Playtest.
I really like what I’ve read about this class. It is a spell-slinging swashbuckler.
This class has quite a bit of versatility and I think I have FINALLY found a class that works with the vision I’ve had for one of my favorite NPC’s that I’ve put in my games for years (my version of Final Fantasy’s Cid).
The only thing I can see as being a negative is that the power creep is definitely in this character, as happens when you start introducing new classes. This isn’t a really horrible negative because I know Paizo will make sure it is as balanced as can be (hence the playtesting) and weed out what is broken.
A really gross ability is Broad Study, which a Magus can take as their Magus Arcana at level 6. This gives the Magus the ability to choose any other casting class (now this is the beta and this may be clarified later, but as of right now it doesn’t say arcane casting class- so that means druid and divine spells are free reign here). I can see this being gross because a Magus has a pretty decent attack bonus, can charge in and begin beating the hell out of creatures with his/her sword and then cast a heal on themselves.