The Tamron 70-180mm is finally in Stock at Amazon US (Click here).
And Tamron USA launched a fathers day special:
Save $50 on the 17-28mm FE at BHphoto, Amazon, FocusCamera, BuyDig and Adorama.
Save $50 on the 28-75mm FE at Amazon, Bhphoto, FocusCamera and Adorama.