It seems the press moratorium has been lifted on The Hobbit: An Unexpected Journey as several media websites have posted reports on their visit to the set of the movie this past June, along with interviews with Sir Peter Jackson, Sir Ian McKellen, Martin Freeman, and Richard Armitage. Based on similiar information popping up in both sites, I think the interviews were done in a conferencing type environment and not one-on-one. Below are links to the reports found so far with a few noteworthy highlights.

Dark Horizons: Set Visit | Peter Jackson | Ian McKellen | Martin Freeman | Richard Armitage
Collider: Set Visit | Peter Jackson | Ian McKellen | Martin Freeman | Richard Armitage | Richard Taylor (VFX)

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The Hobbit: An Unexpected Journey Set Visit Reports and Factoids. There are any The Hobbit: An Unexpected Journey Set Visit Reports and Factoids in here.