Well, thanks to someone screwing up something somewhere some people including myself were able to play the beta as of today (Friday) instead of Monday

.
They sent out the codes today for people to be able to pre-load over the weekend but for some reason the game was actually playable after the download had finished.
I believe that this "beta" is what they are going to release as the demo eventually since it is quite limited. With the exception of some more random exploration I basically finished the beta in four hours (and it could be done much faster if you'd just do the quests without any side-tracking but that would kind of defeat the whole purpose of a PB game…).
There's an NDA so let me put my impressions this way:
- First:

and

- Then:

- And finally: