Hi,
I've noticed an extremely minor issue with the Beta. If you use the artboard tool to create an artboard for a device profile (e.g. Nexus 5) then the artboard is correctly named to match the device, however if you create the artboard from the new document dialog, then the artboard is not named to match the device, which is a bit annoying as I then have to rename it manually before creating artboards for other device sizes.
While I'm posting, could I also request that you add a few more Android device profiles, such as for a Nexus 10 or 4, etc.
Other than that the Beta is working really well for me and has converted me from using Inkscape on Windows, I think I'll be buying it once released so thanks!