Might have overlooked browsing through other threads and online, but was wondering if this was ever confirmed? Going off of the card render on EVGA's site the PCB height appears to match the FTW3, which has been confirmed to be a custom PCB with 3x8pin with the recent actual photos released. The other possibility is that they might have a separate XC Hybrid and FTW3 Hybrid. I'm thinking that might be the case since the render for the Hydro Copper appears to be the XC PCB height. It would make sense for them to also offer an FTW3 Hydro Copper for custom loop enthusiasts.
I'm currently torn between getting an XC and installing an AlphaCool Eiswolf 2 since they've confirmed that they will have an AIO kit available close to launch that should fit the "reference" design before Nvidia decided to do their own custom PCB for the FE cards. I was lucky enough to grab the EVGA 2080ti Hybrid kit before they stopped selling them so I'm worried that they might not offer them to buy this time around. If the Hybrid really is using the FTW3 PCB, I'll be tempted to just go that route for the added OC/Power Limit possibilities.
Also just to chime in on my experience with the EVGA Hybrid Kit on a 2080Ti Black since some users have reported problems on here. I have never had any issues with pump noise, it has always been mounted on the rear 120mm spot in my case in push configuration with the hoses at the bottom. It almost never exceeds 55C in synthetic tests/gaming even with a +175 Clock, +1100 mem so been really happy with it. Though I did opt to use a Noctua fan on the radiator instead of the stock to reduce fan noise.