There are pictures and videos posted by Team members that are more recent starting from page 10 of this thread:
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http://originaltrilogy.com/forum/topic.cfm/Team-Negative1-The-Empire-Strikes-Back-1980-35mm-Theatrical-Version-Release-Details-and-Updates/topic/16108/page/10/
The pictures are usually lower quality previews.
The videos are all 720p and 1080p, and are from scans made from 3 different prints with reels from Kodak and Fuji.
Currently we are evaluating a low fade Fuji print, and possibly an LPP for the 16mm and 35mm versions.
We'll have more to report once we have some definite samples.
Our scans are made with a custom rig and range from 2k-4k, downsampled to 1080p. We have our own dolby decoder to convert the sound from the prints.
This is purely a fan based preservation, and restoration project with no commercial involvement, or plans. We are privately and self funded and are not publicly known, with no plans to be.
All our material is for historical and educational use.
Team Negative1