Never get excited about a patent. It’s not a prove at all that the described product may be produced for real. That said Egami (translation here) spotted a new Tamron lens design and it is a 300mm f/2.8 lens for a Full Frame mirrorless camera system. There is no info about the mount that the lens is going to use. But Sony Corporation maintains an 11% share hold in Tamron (Source: Wikipedia). So it may could be a lens made for the NEX system.
That said Tamron wouldn’t be the first to make a Full Frame compatible E-mount lens. Samyang/Rokinon already sells such lenses for the VG-900! Here they are:
Rokinon 14mm T3.1 Cine Lens for Sony E at BHphoto (Click here) and on [shoplink 16228 ebay]eBay (as Rokinon)[/shoplink].
24mm T1.5 Cine Lens for Sony E at BHphoto (Click here) and on [shoplink 16229 ebay]eBay (as Rokinon)[/shoplink].
Rokinon 35mm T1.5 Cine Lens for Sony E at BHphoto (Click here) and on [shoplink 16230 ebay]eBay (as Rokinon)[/shoplink].
Rokinon 85mm T1.5 Cine Lens for Sony E at BHphoto (Click here) and on [shoplink 16231 ebay]eBay (as Rokinon)[/shoplink].
via Mirrorlessrumors.