The folks from Oxygen Cloud were here yesterday. They installed their Oxygen DroboApp on a Drobo FS and client software on both Macs and PCs. They have told us they will be adding more people, a few at a time, into the private beta over the next week or two.
If i was you, i would go sign up for the oxygencloud forums. I was one of the lucky ones, well, i guess the luckiest as i was the first person to get the admin control panel to help develop it. I have posted feedback and stuff in the oxygencloud forums.