GribbleGrunger on 27 May 2016
This has been confirmed for 2016 by the way:
http://www.kotaku.com.au/2016/05/fumito-ueda-says-the-last-guardian-is-coming-this-year/
And just because those pics from IGN are not of a very good quality, here are some from Gamersyde:
The PS5 Exists.