Although these articles were published in El País 6 months ago they are still very interesting. They are only in Spanish, but if you read Spanish you can get a good and quick overview of writing and writers since the boom, which sometimes feels like the only writing that makes in to translation.
The first article lists young writers (those born during the boom), a representative work, and their interests.
The second article is more a history of the trends in new writing. It includes an attack on the plague of magical realism that appeared after the House of Spirits was published, and an overview of newer trends in writing. Well worth the read if you are interested in Latin American fiction.