According to the link above, "Adobe's development team adds new lens profiles every release."... although there's nothing that suggests what this even means; every release of what? LPC? Because it links to V1.0.4, and there are no profiles that I can find direct access to.
Samyang 14mm f/2.8 ED AS IF UMC: Canon, Fujifilm, Nikon, Olympus, Panasonic, Pentax, Samsung, Sony A, Sony FE
As of 1/1/2018, the Adobe Lens Profile Downloader is no longer developed and is unavailable for download. Adobe's development team adds new lens profiles every release. You can also request for specific lenses here.https://helpx.adobe.com/photoshop/digital-negative.html#resources