True, I said "In Eastern Catalan (including the pronunciation of Barcelona), [unstressed] o falls together with u and e with a," but I didn't say anything about the quality of those unstressed vowels. It's true that unstressed e/a is realised as a shwa for most oriental speakers.

However, phonemically most varieties of Eastern Catalan still only distinguish seven tonic vowels. The main exceptions are found in the Balearic Islands, where many speakers have a stressed central vowel in such words as pera and veure. I'm trying to keep the guidelines simple, though, so I can't mention every possible variation out there--no matter how interesting I may think it is!