According to the following link it seems there is a commit made as recent as 20 days back. Not sure if it is official.

  
      github.com/pytorch/pytorch
  
  
      
    
  


  Bicubic interpolation for nn.functional.interpolate 275



  by driazati
  on 11:57PM - 25 Jul 18



  5 commits
  changed 29 files
  with 827 additions
  and 114 deletions.