Getting a little off-topic, but I'm an amateur brewer myself. Been into it for over ten years, and have a couple favorite recipes; wish I had more time and the facilities to experiment. My sister and brother-in-law are into it too. At some point, maybe we'll put together our own private little brewery. When the home-brew craze first hit, lots of people jumped in and made lots of beer of highly varied quality; now that it's died down a little and craft brewers have cropped up all over, most people still into it make pretty good stuff, assuming you have the same tastes. Count me in if you need to reduce your stock!
Anyway, on the 900, I agree that no way, no how does Poo call anything a 900 or build a motor of 866 or 900cc displacement. Funny thing is, guys have been able to get them to last and be decent sleds (if you can stand the weight), but there's definitely a stink to that number now. That said, I wouldn't be surprised if they're working on a slightly bigger, tweaked NA motor. I wouldn't put money on a lot more displacement, just a slight bump and other improvements (call it v1.5 of the Patriot) for another 5-10 HP. It may not happen, they may put all their eggs in the Boost basket, or if they did a "big bore" the Boost might stay at 840cc, but the idea of a mid-life upgrade to the Patriot architecture seems logical.
With regard to electric, I only see that coming to trail sleds with existing technology. As mentioned earlier, the "fuel" is just silly heavy compared to petroleum, and just like airplanes, you can't hide it and work around it. If you made a 150 HP electric sled with the same RTR weight as existing mountain sleds, you'd probably only have enough battery to go 10 miles or so. Just adding L-ion batteries to theoretically match the range of current sleds would probably make something too heavy to get around on level ground, let alone climb anything. Where electric could work is in a trail sled, rent and tour type of operation. You'd go much farther because you're on a packed surface, you can charge and warm the batteries overnight, and it's a minor thing if someone runs a sled out of juice (you could probably have a booster pack to get it home). So for puttering around Yellowstone, sure, but for anything off-trail you quickly hit show-stopping limits.