i just dont buy this story. skyrim was released in late 2011. even if most of the skyrim team had been working on skyrim updates and dlc, the early planning of fallout 4 would've likely been conceived by skyrim's end. bethesda after all has a huge studio of developers working there, i cant imagine todd howard single handedly being left to start work on fallout 4. also according to this "leaked info" it claims fallout 4 is 55% done as of june 2013, if fallout 4 was started right after skyrim, that would've meant fallout 4 started development december of 2011 or january of 2012. that would give fallout 4 basically a year and a couple months (Dec 2011/Jan 2012-june 2013) of development to reach 55% completion. so why then does fallout 4 need another 2 years of development to be finished?? not to mention a new fallout game on next gen would be liken to when oblivion came to the 360 early on this in this current generation, it just wouldnt be a feasible game to down port to the past gen of consoles. so im doubting a ps3/360 release of a game like fallout 4 in 2015 on current gen.
my guess, a fallout 4 teaser will be shown at this years vga's just like skyrim at the 2010 vga's. then itll be out around the end of 2014.