Twilight: Who are you? Celesta: I am The Creator - of a television show that gives hope and joy and inspiration to millions. Twilight: Then who am I? Celestia: You're the star Twilight: Was nothing real Celestia: You were real. That's what made you so good to watch.
After seeing the episodes that have aired so far, I don't think it matters that much anymore. She's still that fun, nerdy, dependable unicorn we know and love. She just has it easier when it comes to stairs next time.