All is not unicorns and puppies though: there has been some concern expressed over the name of this feature. On the one hand, it might not easily convey what this thing does. A lot of things come to mind when I hear the term “workspace” used in a compu-technological context. Were it not for my years as a Smalltalker, I’d think “window manager” and it is most-definitely not that.
The other, more important issue is, how will this localize? Axel, aka Pike, aka :l10n expressed some concern over the word. To get some feedback, I’ve written a post in mozilla.dev.l10n asking for help making Workspace internationalizable. Take a read, and drop a note in there if you have any suggestions.