Which new denomination has been founded?
Are you familiar with historic Baptist distinctives? They include the autonomy of the local church. Historically, Baptists didn't form denominations.
What are you refering to when you say that someone is "forming a new denomination"?
A denomination, literally, is any appellation that a church chooses to identify itself by. So, yes, “Baptist,” and “Southern Baptist” are denominations, even if they are not hierarchical or episcopal in structure. (”Baptist,” then could be a denominational family, since it includes Southern Baptist, American Baptist, Baptist Bible, National Baptist and other denominations.) Ironically, “Westhaven Non-Denominational Church” became denominational the moment they decided not to simply be called “Westhaven Church.”
That said, I’m not sure from that article whether UBF is a denomination. If the churches start calling themselves by that name, well that’s marketing. On the other hand, if a pastor joins the UBF merely for informational purposes, it’s plainly not.