Peter Jackson, who is still busy at work just posted a video to his Production Diary (#11) from the set of The Hobbit: The Desolation of Smaug on his Facebook page and he brought with it some possibly heartbreaking news fans who were planning on attending or seeing a panel at SDCC this year.
There will not be a panel, sizzle reel, or the like of The Hobbit this year. Jackson himself states that a few days ago he told Warner Bros. that he was not ready to present anything, as they were still shooting. He also mentions in the video that he couldn’t really afford (time-wise) to send any of the actors to attend a panel and didn’t want to send anything along, (like a sizzle reel of already captured footage) that wasn’t fantastic. In short, they’re just too busy with their production schedule.
The video can be watched here on Peter Jackson’s FB page.
EDIT: Here’s the video.