So far the only Harry Potter set is 10217 Diagon Alley, but there should defiantly be more coming soon!
They should be already out in Lego Stores and on their website already.
The new Star Wars Lego's come out in August 2010 and January 2011!
never
2010-2011
In summer of 2012
They only made lego sets for the first three movies.
Nobody knows where Lego will export their sets next, try contacting the Lego Support team, and see if they'll come up with an answer.
Most of them are unknown, but the new battle packs are coming out this winter.
These will come out from Lego and stores like Target and Walmart in August 2011. At Toys-R-Us these sets will come in June or July. Hope this helps!
Lego dino is one that will come out. and Friends are a product for sale in jaunary
in march
I doubt it, because halo is to violent of a game for Lego to come out with. But I've seen a few on eBay, which are fan made. But no, it will be unlikely for Lego to push forward a Lego Halo.