I still will probably wait a year or two before diving in as per usual for me.
There is really no point in jumping into either the PS4 or XBO with so many games still coming out on PS3/360. Metal Gear Solid V, Dark Souls II, Grand Theft Auto V, Gran Turismo 6, The Last of Us, Destiny, Watch Dogs, South Park RPG etc.
Way to many great games still coming out on the PS360, plus for me personally I was out of gaming for a couple years so I still have a lot of catching up to do.
Its better to let other people be guinea pigs for all the inevitable failed launch units and games, and wait and see how things play out.