While that might look astounding, it shouldn't be a surprise. Our last report from Lagardere indicated that ebooks accounted for 20% of Hachette's revenue in the first half of this year. Today's news is still a sizable increase, yes, but not an earth shattering kaboom.
But there is a bit of news that odes qualify as earth shattering. US ebook sales are great, but in the UK they account for 9% of revenue. Given that the UK market is significantly less well developed than the US market, 9% is a surprising chunk of change.
Just to put these numbers into perspective, Wiley reported that ebook sales nearly tripled last quarter, Simon & Schuster reported ebooks at 17% of revenue, and Penguin reporting a doubling in ebook sales recently.