So we got three possibilities:
1 - Intel shows suitable Skylake cpu at CES and a couple of weeks later Apple silent upgrade the rMBPs
2 - Apple shows the rMBP redesigned during the March Event
3 - Apple shows the rMBP redesigned at WWDC in June
I really doubt about the second option, they will present too many things, if it's true that's a dedicated event for iPhone and iWatch.
Instead I see more likely the 1 and 3, which don't exclude each other.
Anyway, it's really funny (

) how we're still in the conditions from august/september: we still know nothing.
Except the hints from CES and Apple Event, which are kinda uncertain, we have no idea what's gonna happen.
Everyday I check news about Iris 580 or Skylake, there's nothing.
We can only wait, at least for January, at this point.
Dammit!