Sci Fi now(UK magazine) just did a 25 year special on TNG which included an interview with Craig Weiss (CBS director of visual effects).
Rest of the article was pretty interesting but nothing especially new on the subject.
What I loved the most about the article was Burnett, Weiss and Dexler's comments about how they intend to create for this BD release a definitive edition of TNG. Each season will include a new feature length documentary with stories, interviews and images that haven't been told before. We've seen/heard examples already, like the animation used in the opening titles and the possibility of an extended cut of Measure of a Man.
I already was excited but this excites me even more. I can't wait for season one and will eagerly await the upcoming seasons.