There is no such thing as a Dev Kit for one user afaik. The PS3 Kits I'm sure are getting much easier to get but I would bet that the brand new PS4 Dev kits will be harder to obtain than refined uranium. Ok, maybe not that drastic but I'm sure they will be back to the strict requirements. Simply put if they give you a dev kit they are giving you access to reverse engineer the entire system and exploit their networks (which Sony has had problems with in the past) Being that their dev kit will contain source code and documentation on everything that makes the console what it is they are not willing to hand that over to just anyone.
More so your best bet is to build the game in it's entirety using technologies and engines that can support the main target console system. Once your game is released and well protected legally you might be able to get somewhere contacting development studios that already have a dev kit and license. Through an extremely hefty contract (meaning you won't see very much of the money earned) you can come to a deal where they will release your game and cut you back a small portion of the profits. Beyond this as a first timer or someone with less than say 5 completed titles on the market I doubt you'll have a snowballs chance in hell (Sorry, but it's the truth). I would recommend keeping an eye out for the new XBox and see if they continue to offer the Indie market place as the requirements are such that a basement indie can actually obtain a license and submit a game. Also this counts for console game release experience that can later be used when trying to get arcade and full dev kit licenses for various consoles. If this still isn't an option perhaps look into Ouya which from my understanding will have the lowest and most obtainable of the requirements as far as us indies are concerned.