None. The movies are finished.
There have been no announcements to suggest there will be any Harry Potter Lego sets released in 2012.
LEGO produced a number of Harry Potter sets when the films were being released. Most of the sets were retired in 2012, and have not reentered production since then. As the movies have now all been released, it is unlikely these sets will be reproduced.
There are about 55 Lego Harry Potter sets to buy.
Seven sets were released in 2006. Two sets were released in 2007. Four sets were released in 2008. As of 2009, this line of Lego toys has been discontinued.
Many of the Harry Potter products have limited editions. For example the Harry Potter movies have had limited edition boxed sets. There are also entire Harry Potter collections offered in limited editions.
Most places that sell lego sets will sell the Harry Potter sets. Among these are Walmart, Sears, and Toys R Us. The official Harry Potter site is also sure to have the sets as well.
All Harry Potter lego sets are discontinued.
The last Harry Potter Lego sets were released in 2011, and they include Diagon Alley, Forbidden Forest, Knight Bus, Battle for Hogwarts and Trolley and the Lab.
Lego and Harry Potter is sure to be a winner for any child at Christmas. Lego Harry Potter sets are available from a wide range of retailers both online and in physical shops, for example Amazon or Toys"R"Us, in addition you can buy Harry Potter sets direct from the manufacturer.
Harry Potter Lego sets are available online. You can either directly go to Lego to purchase a Harry Potter Lego set but you could also buy this set from other providers such as Toywiz or Amazon.
Lego Harry Potter is already out. Checkout the latest Harry Potter sets at Lego.com!
There is a tour of the sets in London at Leavesden Studios.