**warning** noob chiming in!
FYI Yamaha, at least in Japan, offers two diamond frame models under the PAS category. The Brace and Vienta.
I would know as I live in Japan and own two Braces.
ハイスペックなスポーティモデル 大容量バッテリー 内装8段変速を採用し長距離サイクリングをスポーティにこなす 26インチ電動アシスト自転車[パス ブレイス]
www.yamaha-motor.co.jp
カジュアルなスポーティモデル 内装5段変速採用でスポーティな走行性能を持ちながら街乗りも休日のサイクリングもオシャレにこなす26インチ電動アシスト自転車[パス ヴィエンタ ファイブ]
www.yamaha-motor.co.jp
Both these bikes have the normal PW series motor and the Brace has Yamaha's largish looking magnet speed sensor disk mounted on the standard Shimano 8 speed IGH.
From what I saw at the dealership, it looks like all the YPJ category bikes have a smaller speed sensor disk mounted to the rear hub\disc brake. I don't believe any current Yamaha brand ebike uses a spoke magnet style speed sensor. Even the cheaper step through stuff uses a tiny front hub mounted disk.
It looks like the Civante is a currently offered bike but just less 'restricted'. And as someone asked, since the new PW-X motor has a different bolt pattern, that might be one reason it's not on the Civante. BTW their MTB with PW-X rode way different from the standard PW stuff. It was more torquey and kinda surged with every stroke. It was cool but the huge tires felt like they created a lot of resistance. Or maybe don't listen to anything I say as I'm a total noob. Haha
BTW, there are some people selling modified versions of the hub sensors in Japan but I guess I should just start a new thread for that. But yeah as others have mentioned, perhaps this will open the doors for a legit way to unlock some power for those stuck with the hub mounted speed sensor!
Anyways, this is my first post so... Hi! XD