We apologize it has taken this long to get back to you with this information! We are hoping to see some models of the Cannondale Synapse Carbon (Carbon 3, Carbon 4, and Carbon 105) in December. It's important to bear in mind that there are significant delays in materials sourcing, manufacturing, shipping, and processing at this time. As such, our timelines are estimations at best. We are unable to provide updates or alerts when products come in stock, so your best bet is to check the website to see when the product is available to purchase.
Hopefully this helps, thanks!