As expected also Richard Wong highly recommends this lens :)
Tamron 70-180mm FE lens is in Stock and/or shipping here:
In USA at Amazon, BHphoto, Adorama and FocusCamera
In Germany at FotoKoch DE, Amazon DE, Calumet DE.
In UK at Amazon UK, WexUK, ParkCameras.
In Amazon EU stores at Amazon FR, Amazon IT, Amazon ES, Amazon NL.