Hidden within the confirmation of leaked documents detailing the upgraded PlayStation 4 console codenamed 'Neo,' it was revealed that Sony has already begin sending out development kits for their upcoming console.
Earlier today, Digital Foundry confirmed that they had access to the same leaked documents that GiantBomb had. These documents offered a number of details on specs for the new PS4, how the console will worked and how games will be affected (overview here).
In addition to this information, Digital Foundry snuck in that Sony has already begun sending out development kits to studios, in hopes of meeting their October deadline for games to ship with both a 'Neo Mode' and a 'Base Mode.' These dev kits will also help other developers with games releasing in September offer a 'Neo' update for their games to be compatible with the device.
The dev kits that have been (or are in the process of) sent out are not being shipped in their final case. A secondary kit, out in June, will be released – again without its final casing.