The latest issue of Famitsu Weekly contains an interview with Tetsuya Nomura which surprisingly, actually contains some new information regarding the Fabula Nova Crystallis Compilation. Of course it isn't the nice kind of surprise as it seems Final Fantasy Versus XIII's development has been put on hold. If only I was joking.
According to Nomura, the development of the compilation is having some troubles. Final Fantasy Versus XIII has been put on hold so the team can help with the development of Final Fantasy XIII as it's their number one priority. However the designers and artists will still be concentrating on working on the artwork and visuals for Versus. Final Fantasy Agito XIII is still in the early stages of development and Hajime Tabata, the director is now writing the entire synopsis himself which involves a huge timeline.
You could also see this in a disappointing way as well. Nomura says that although there will be the DKΣ3713 event in August, there will be more information at TGS in October. This implies that we won't be having any information at all until DKΣ3713 so E3 may not feature Final Fantasy XIII. I suppose we're used to waiting.
UPDATE: This report is false and Square Enix said to Eurogamer that Final Fantasy Versus XIII is right on schedule and won't go on hold.