Along with Tamron 18-400mm lens, Tamron now finally announced the new SP 24-70mm f/2.8 Di VC USD G2 lens today. This lens will be available for Nikon F-mount full frame DSLR cameras. The US price for this lens is $1,199, now available for pre-order at B&H Photo/Adorama, $100 cheaper than Sigma 24-70mm f/2.8 DG OS HSM Art lens. This release date for this lens is in August, 2017.
Tamron will soon announce two new lenses in next few days. Currently, there are already detail info about these two lenses. Tamron SP 24-70mm f/2.8 Di VC USD G2 lens will be priced $1,299 in US, Tamron 18-400mm f/3.5-6.3 Di II VC HLD lens will be priced $649 in US. Both lenses will be available for Canon EF mount and Nikon F mount.
Tamron will announce a new SP 24-70mm f/2.8 Di VC USD G2 lens next week. The new G2 lens will replace current SP 24-70mm f/2.8 Di VC USD lens. The price for new G2 lens will be similar to current old lens.