It’s an interesting question. I think it’s safe to assume that iOS 7 was already well into development when the Forstall news was announced. Maybe Federighi tweaks some things as a result of taking over, or maybe that waits until iOS 8. I’m still betting we hear something around WWDC 2013.
OS X is unclear. Last year, Apple legitimately surprised with Mountain Lion. Do they do it again this year with 10.9? Are they working on OS XI?