Publication rights often vary by region (for example, Harry Potter has different publishers in North America than it does in the UK) and it's an understatement to call the situation a mess. So, it's good to see Apple making headway.
Given how slow iTunes TV and Movies have been offered internationally, however, the entertainment industry should still feel shame and hopefully this adds impetus towards simplifying and -- frankly -- modernizing the way these licenses and rights are handled internationally.
Back on-topic: who's excited for iBooks? Anyone going to switch over from Kindle? Or is it just an easy gateway to getting those 30,000 Project Gutenberg titles onto your iPad (and later this year, iPhone)?