I noticed some odd behavior with this new beta:
1. When I go to another application, Logos appears to drop out of the taskbar. So when I click on my alias, the starting logos reappears. But then it goes to the resources that I was previously viewing.
2. While in Logos now, I cannot drag my mouse to the bottom of the screen to view my taskbar for running applications. Nothing happens at all until I Alt-Tab to another application.
Nothing fatal here, but very unexpected.
I'm in Windows 8.1 Pro on a Lenovo Yoga 2 Pro.