I guess many of us were waiting for this: the possibility to use Sigma's excellent…
Tamron SP 35mm f/1.8 Di VC USD and SP 45mm f/1.8 Di VC USD lenses announced
Tamron announced two new prime lenses for full-frame DSLRs, SP 35mm f/1.8 Di VC USD and SP 45mm f/1.8 Di VC USD. Price is $599.
There is an introductory post by B&H Explora, where you’ll also find all the pre-order links.