App Store version of 4.2?

In the past there have been differences between the Apple App Store version of BC and what is available on Garmin's web site.

Today, I see BC 4.2 in the app store but the web site is still showing 4.1.2. From within the 4.1.2 app it reports no update available.

Does anyone know why this is or whether I should wait for the web version?

Thanks,

-dan