Quick look at the new Rokinon 35mm T/1.5 Cine Lens. Basically same glass elements compared to their standard 35mm F/1.4 Photo lens. It's just a small $50 dollar difference in price, with a few Cine style features such as de-clicked aperture, lens gears on focus and aperture rings, and indicator markings placed towards the side.
Rokinon's first Cine lens was an 8mm T/3.8, but along with this 35mm F/1.5, they have also just made available their new 14mm T/3.1 and 24mm T/1.5 Cine lenses which just recently became available to purchase. Those wide angle 8mm and 14mm might come in handy for the new BlackMagic Cinema Camera. Check out the complete Rokinon Cine Lens collection in stock over at B&H (Click Here).
The new 35mm Cine Lens will have a lens gear built around the housing, and de-clicked manual aperture ring to adjust exposure on the fly. First lenses will come in Canon, Nikon, and Sony mounts, but as one wise commenter mentioned you could just go for the Nikon version (since it's a manual lens) and find simple adapter to fit just about everything else.
[Update] Rokinon will also be announcing a new 14mm T/3.1 & 24mm T/1.5 Cine Lens. At this time, only the 8mm T/3.5 Fisheye is already available, and 35mm T/3.1 has been just been released for pre-order, but you'll be able to check out the entire Rokinon Cine Lens collection over at B&H (Click Here).