We've had some slight technical problems lately which have seized any progress for the past three days, making it impossible to test it either.
The technical difficulties have been resolved now though, so we can continue working. This has forced us to set our demo's release date back to 20.07.2015.
Some progress news
We've managed to get something done anyways and almost everything is starting to be done. We only need a little more time for testing the game, so the Demo-beta could really be actually playable.