From their first announcement to recent statements they've always said that Project Scorpio will be released this holiday season. Just as the talk that the PS4 Pro might have been delayed to bump the specs once Scorpio was announced turned out to be false I think any talk of a Scorpio delay for spec increases will be false. I would've thought they'd have the hardware well and truly sewn up by now, contracts in place with AMD and production schedules laid out. If they're still saying holiday 2017 now then I'd expect it to be true.