There's been a lively discussion in chat as to whether we should allow questions on hardware specs where the information is available, and the hardware is available for purchase, but the hardware is not physically available to consumers yet. Specifically, this question:
Will the “Knuckles” Index controllers be compatible with my HTC VIVE?
Questions about unreleased games are considered off-topic, and for good reason, as there's a long history of developers over-promising and under-delivering. However, in the hardware world, this is a much rarer occurrence (The Xbox One debacle being the main perpetrator). While software can be changed up to and after the release date, hardware is relatively fixed after a certain point.
With that in mind, it shouldn't fall under the same restrictions as unreleased software. After a certain point, questions about unreleased hardware should be allowed. The question is where to draw that line. I propose that once hardware is available for sale from the manufacturer, questions about it should be allowed.