It’s been rumored for a long time, and there are a lot of reasons why it makes sense, but today Lucasfilm has put a rest to hopes that Episode VII would be based on the post-ROTJ Expanded Universe.
Today Lucasfilm made an official statement on the current state of the EU and it’s future:
In order to give maximum creative freedom to the filmmakers and also preserve an element of surprise and discovery for the audience, Star Wars Episodes VII-IX will not tell the same story told in the post-Return of the Jedi Expanded Universe. While the universe that readers knew is changing, it is not being discarded. Creators of new Star Wars entertainment have full access to the rich content of the Expanded Universe. For example, elements of the EU are included in Star Wars Rebels. The Inquisitor, the Imperial Security Bureau, and Sienar Fleet Systems are story elements in the new animated series, and all these ideas find their origins in roleplaying game material published in the 1980s.
Basically elements from the EU can be used in the canon going forward, but the post-ROTJ stories are not being adapted into the Sequel trilogy.
According to Lucasfilm, the first part of the “new canon” will be Star Wars Rebels:
On the screen, the first new canon to appear will be Star Wars Rebels. In print, the first new books to come from this creative collaboration include novels from Del Rey Books. First to be announced, John Jackson Miller is writing a novel that precedes the events of Star Wars Rebels and offers insight into a key character’s backstory, with input directly from executive producers Dave Filoni, Simon Kinberg, and Greg Weisman.
Going forward all Star Wars elements such as books, comics, and the movies will share an interconnected canon. This will do away with the confusing “canon levels” that the older EU suffered from.