I called CIC IRCC call center 2 weeks ago asking about the new IMM 5768 but as mentioned above they don't know exactly when this will be released but said keep checking. Btw, the hold time until someone answered the phone is actually over 40mins even if recording says current hold time 8mins, etc.
If anyone has any advise how to mail the application package so it arrives exactly January 3, 2017, would appreciate information. Unfortunately I tried asking this same question but was not given a definite answer.