Hi, in case anyone’s wondering:
I called with someone from Particle, who mentioned that orders through their Wholesale Store of less than 25 Particle units will ship out on December 31. Anything over 25 goes on January 31. Much better than the 12-16 week lead time! I ordered 20, and got a confirmation that it indeed will be in-stock and shipped on December 31 
By the way, this applies to the Electron 3G Americas/Aus product…I don’t know anything about any other products including their trays of 50…also, I assume once all of their Electrons get back-ordered, it may default to January 31 for all orders so you might want to be quick 