Apple have released an update to Aperture 3. This new update (available here) brings in a host of improvements and fixes. However, if you scroll down to the very end of the changes it states that the new version adds "iPad Compatibility" and I quote "Enables support for importing photos from iPad to the Aperture Library, as well as syncing of photos to iPad."
So, you can sync photos to the iPad, great news! More exciting though is being able to import into Aperture from the iPad, so that could mean that a camera may well feature. Surely not! At this late stage it is very unlikely a camera will appear, but this is interesting wording on their update page for sure.