In the Powers future? Unlikely, as that's 100 years or so in the future, so even a newborn baby would likely be dead by then. In the present though, definitely. Based on what we saw in House of X #1, I'd say everybody who ever died has been resurrected and everyone who was depowered is restored.
2nd and 3rd printing covers:
https://www.bleedingcool.com/2019/08...hird-printing/