I noticed some time back that the (very pretty looking) iBooks app is not a built-in app on the iPad, even though it was demo-ed and talked about quite a bit at the iPad launch event. It’s a free download from the App Store instead, and like others I’d been wondering why.
I think the reason put forward in the tweet above from @perfy to John Gruber (of Daring Fireball) is a very good one.
Rather than having to wait on OS updates to tweak the iBooks app, it can be updated whenever, just like any other App Store app – except probably without rejections backed by loony tune reasons and such-like. :)
Via: Daring Fireball