The message on their website is applicable to almost all of their bikes.. I recently purchased a 2023 FX Sport 6 and the website said the same for it. I went into a Trek corporate store and was able to order it in size L through them. I had to put 10% down and get on the wait list.. Took a few months to come in and I was told I could cancel the order at anytime for a full refund of my deposit...
I assume this is just standard now for them so they can manage demand and shortages better..