Dpreview published a couple of Tamron 24mm and 35mm f/2.8 FE hands-on images. Check out their site!
Preorders:
Tamron 20mm f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 24mm f/2.8 at Adorama, FocusCamera and BHphoto.
Tamron 35mm f/2.8 at Adorama, FocusCamera and BHphoto.