They didn't change the shoutcut key, they removed it. About time too given the hundeds of threads here by people claiming they can't work because the gizmo isn't visible. (They could, of course, but generally don't realise that they can).
Is the Gizmo totally invisible? Views (menu) > Show Transform Gizmo.
Is the Gizmo red/grey (as when the Select tool is active)? Customise > Preferences > Gizmos (tab) > ON (at the top/left of the dialog tab).
If you want it back set a shortcut key for it in Customise > Customise User Interface. "Show Transform Gizmo" is the Action you need.