Just yesterday, I shared some thoughts on the timing of what has been announced as HomePod:
Apple could pre-announce it at WWDC, and ship it in the coming weeks or months. If it comes with SiriKit support, and if Apple expands that in iOS 11, does it make sense to launch it now with SiriKit being limited to such a small handful of app categories in iOS 10?
Apple did pre-announce the device. It will go on sale — for $349 — in December.