Tamron now officially announced the previous leaked SP 15-30mm f/2.8 Di VC USD G2 lens. It has new elements and coatings, a more powerful autofocus CPU and an enhanced Vibration Correction system. The Nikon F-mount will be released on September 21st, 2018, US price is $1,299.00, now available for pre-order at B&H Photo/Adorama.
Tamron will soon announce a new SP 15-30mm f/2.8 Di VC USD G2 lens before Photokina 2018. Above is the first leaked image of this lens.