Who is to say possibly? Everyone who he responded to asked about gameplay, two of them only asked about gameplay. Why would he be talking about other information if he responded to people asking about gameplay?
To clarify, I don't think he meant "a good month" as in "at least 30 days."
He meant that it will be "a good month" as in "some good Skyrim stuff will be released during this month." Since he was responding to a question about gameplay, I think that will include gameplay footage.
EDIT: Ninja'd myself