SLR Magic will improve the Cine 50mm f/1.1 FE performance before it ships.

Time Stood Still – An Extreme Low Light Video – Sony a7SII & SLR Magic 50mm f/1.1 from Johnnie Behiri on Vimeo.

The new SLRmagic 50mm f/1.1 FE lens was actually supposed to ship on December 10 according to BHphoto (Click here). But after some concern raised by early reviewers SLR Magic sent a message to Cinema5D:

From the two weeks of real life testing by several testers, we received 3 main concerns.
– Corner softness at infinity
– Sharpness at f/1.1
– Lens flare
We are currently making some changes within our capability to address the issues. The new changes would improve corner sharpness at infinity by approximately 20% but do not expect perfection after the changes. Sharpness at f/1.1 is not affected. Lens flare would be addressed with an optional lens hood.

So it’s yet unclear when the lens will actually ship.