DPR has a sample gallery up, shot in crop mode with the A7rII:
http://www.dpreview.com/news/4812403421/sigma-30mm-f1-4-dc-dn-contemporary-real-world-sample-gallery
Some good info from looking at the shots and in the comments:
- CA is apparent wide open, but gets better quickly
- "all focus modes are available, as is PDAF over the entire PDAF area."
- "fast stepper motor - one of the faster ones I've seen for F1.4 glass"
- Image circle is not close to FF, lens is definitely APS-C only (unlike Sigma's original 30/2.8, unfortunately)
- T-stop appears to be f1.8ish
- Decent amount of distortion to be corrected in software
I'm really interested in the Sigma 30/1.4, although I wasn't blown away by the DPR sample gallery. Sharpness doesn't look as good as the original 30/2.8 was, but maybe I'm just judging it harshly wide open. Rishi's comments indicated he thought it was pretty sharp.