Will the new left navigation highlighted at Schema be available to Professional licence holders?

In the keynote, the left navigation is mostly discussed in tandem with the “extended collections” feature, which I believe is only available to enterprise. However, I’m interested in the new, full screen variables panel that’s included with the new left nav panel since it makes it much easier to get a complete picture of a design system token set. Is this UI element going to be rolled out to everyone, or only enterprise users? If yes, when’s the target roll out?