KOEI Tecmo America has released a demo of Dead or Alive 6 on PS4 and Xbox One. It is exclusive to Xbox Live Gold members and Playstation Plus subscribers while sadly there is no demo for the PC. The demo will only be available from February 22nd at 10:00 am EST to February 25th at 2:59 am EST. In Europe it will be from the 22nd at 3:00 pm GMT to the 25th at 7:59 am GMT.
March 1st is currently the date of full release which will be on PS4 and Xbox One as well as PC. Shown below is the Deluxe Demo teaser.