Announced officially at the PlayStation Event in New York today, the PlayStation 4 Neo, now called the PS4 Pro, will release on Nov 10, for $399.99. The PlayStation 4 Slim, which will be the "new standard" PS4 going forward, was also announced and will launch Sept 15 for $299.99.
There were some great games shown off, including Horizon: Zero Dawn, Infamous: First Light, Shadow Mordor, Call of Duty: Black Ops 3 and Infinite Warfare. there are "half a dozen" games getting patches from first party, 3rd party games also getting PS4 patches.
Lastly, every PS4 out there, from the originals sold back in 2013 will be HDR capable with a firmware update coming when Pro releases.