I was at a financial startup ~ 2012 and remember getting a couple of these to play with. They came in the form of 1U servers (HP I think) running RHEL5 that each needed a public IP that was open to bloomberg. I think the client app was windows only at that time, I wonder how much has changed
I do not think it runs on anything but windows, but you can install the terminal software on any Windows computer you want. They are now selling "Anywhere" subscriptions that basically let you move from one machine to another.
I interned at Bloomberg this summer and there was an announcement that B2 (what you're maybe referring to as V2) will be sunsetted, although some of the major improvements will be ported over to B1 (the "original" version). Unfortunately, tabs were not one of the things they'd be porting :(