I can't see that happening. They do post items on the Disney Parks Blog which are of interest to DVC owners. Off the top of my head, they've done stories on the Vero sea turtles, new resort merchandise and extensive coverage of Aulani.
All of the things listed come at a cost. Whether it's research, photographers, information gathered from (highly-compensated) veteran Imagineers, etc. the stories are costly to research and publish.
Disney will grab at the low hanging fruit. They'll structure items to have as broad appeal as possible and post them to the Parks Blog for all to see. Why limit your audience to a few hundred thousand DVC owners when it can be published for millions to see?
As for news, most information is so highly filtered by Disney PR and legal that there isn't a whole left they are willing to report. The bits you read are essentially written by Public Relations staffers...not journalists or investigative reporters.
Isn't that pretty much what forums like this are for?
Again when it's official, the content is so highly filtered that it's virtually useless. Even the Parks Blog will delete reader comments at will.
If Disney did host an official member Q&A, the questions they chose to answer would be the most bland and colorless topics imaginable.