Jeff Grubb corroborates NateDrake's Switch 2 reveal date of January 16th, heard it from "multiple directions & multiple continents" (rumor mentioned to have been circulating in the UK for a while, US as of the last week or so)
In terms of timing, Jeff was specifically told 16th/17th. But he figures that it's just to account for various time zones (he cites US & JP's time zones as an example).