Well, there are a few NSN's starting to trickle into the system for the newest "Crux" style CamelBaks. There are only a few (so far), but it's a start. Here they are:
https://www.armyproperty.com/nsn/8465-01-532-6426 ThermoBak, 100oz/3.0L "Long" in Coyote Tan
https://www.armyproperty.com/nsn/8465-01-683-2274 ThermoBak, 100oz/3.0L "Short" in MultiCam
https://www.armyproperty.com/nsn/8465-01-685-3330 Sparta, 100oz/3.0L, in Coyote Tan (note: this NSN previously applied to the "Antidote" version, and the "Omega" version before that; so it's been reused a few times)
https://www.armyproperty.com/nsn/8465-01-685-5559 50oz/1.5L Crux Reservoir