Campy coming in with the 1x13! https://www.campagnolo.com/UK/en/ekar/1x13
That's crazy haha. In an interview with sram engineers, they said the real limit with 1x drivetrains is the amount the chain has to bend when in the outermost positions. If be pretty cool if they could figure out how to deflect the chainring and align it correctly
But there's an awesome side effect of drive trains like this, they're really noob friendly. I used to sit in the top three gears when going uphill, but now the 51 tooth is reserved for climbing walls as my fitness has improved.
Long live the 1x12!