A few thoughts, for those saying well if Sony's doing bad then MS and Nintendo blah blah. Look, stop comparing them to each other, and just look at Sony's numbers (weekly). On their own, they aren't exactly stellar, right (probably 'ok')? So, clearly there are ways Sony can improve week to week, month to month. Granted, I think E3 plays a pivotal role in their current strategy, with regards to weekly sales, but, we'll have to wait and see. It's also well known that during the early summer, sales usually slow down, so there's that also.
The other thing is, I think what people mistake for a 'bad patch' is simply a strategy they're employing since the PS4 is doing so well. I think had MS not stumbled out of the gate, and had the Wii U not been in the situation it is (or, if the PS4's sales hadn't been so meteoric...ergo, they've been on top of their competition comfortably), things may have gone much more differently. But, MS and Nintendo gave Sony some breathing room, and they elected to have their heavy hitters work on remasters at first, for the simple purpose of acclimating themselves to the hardware (refining in-house tool sets, building knowledge base, the ICE team still exists, and Mark Cerny's team is apparently also helping studios...), so that actual new content would look/handle that much better. This, of course, is theory. But, it makes sense given how many studios Sony has, and how many of those studios have put out content thus far (and what that content has been), and the fact that 'usually' the first year or two of games, aren't very optimized for the new hardware (this is across all platforms of gaming devices, btw).