We all need a break from the Nikon Z: Tamron will soon announce a new SP 15-30mm f/2.8 Di VC USD G2 full frame DSLR zoom lens for Nikon F-mount that will replace the current SP 15-30mm f/2.8 DI VC USD. The Nikon mount will start shipping at the end of September.
The old Tamron SP 15-30mm f/2.8 Di VC USD model was announced in 2014, released in 2015 and is currently $100 off.
Update: additional information is available here:
Tamron SP 15-30mm f/2.8 Di VC USD G2 lens additional information
Via PhotoRumors