Primeiro, vamos olhar o comunicado de imprensa para ver o que a Lucasfilm disse sobre o conteúdo que existia antes da limpeza do cânone.
While Lucasfilm always strived to keep the stories created for the EU consistent with our film and television content as well as internally consistent, Lucas always made it clear that he was not beholden to the EU. He set the films he created as the canon. This includes the six Star Wars episodes, and the many hours of content he developed and produced in Star Wars: The Clone Wars. These stories are the immovable objects of Star Wars history, the characters and events to which all other tales must align.
Eles continuam discutindo Star Wars: Rebels em específico, afirmando que está dentro da nova continuidade oficial.
On the screen, the first new canon to appear will be Star Wars Rebels.
Em relação ao bit "pós-Jedi", há este parágrafo
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.
Isso significa que, embora a UE seja não-canônica, alguns conceitos e materiais da UE pré-ROTJ (até 4ABY) podem entrar no novo cânone. Tudo Post-ROTJ deve ser assumido ida neste ponto (as crianças Solo, Thrawn, Cbaoth, Yuuzhan Vong, etc).
No que diz respeito à sua pergunta sobre a distinção entre "definido" e "publicado", deve-se notar que houve realmente não é um lote de material da UE publicado anteriormente ao ROTJ . Splinter of the Mind's Eye e Han Solo Adventures foram os únicos quatro livros publicados antes do lançamento de Jedi. Além disso, havia os quadrinhos e o especial de fim de ano .