Newsweek goes into some detail on the current filming schedule as well as what it is like on the Potter set right now.
In the report, director Alfonso Cuaron jokingly says:
Lots of nudity. And lots of sex. You just have to let it flow."
You don't need to encourage it. You allow it to be. And believe me, they have a lot of it."
As for the future:
Radcliffe says he'll be riding the Nimbus 2000 in the fourth movie, The Goblet of Fire, and it appears that his young costars, Emma Watson and Rupert Grint, will join him. Beyond that, they still have to ask Mom and Dad. "We're optimistic," producer David Heyman says, "but it's early."
From the report it sounds like all is going well. Don't forget to listen to the audio segment.