Rene Ritchie from iMore on the upcoming 1Password for iOS:
1Password 4 for iOS is a brand new app. It will require a purchase. There will be a special price available at launch time. The existing 1Password iOS apps will no longer be sold. They will continue to be supported, will sync with 1Password 4 and be available for download in the "Purchased" section of iTunes.
This is not only ballsy, it's awesome. Software like 1Password is immensely valuable. It's also a one-time purchase. That means that the company gets paid once when you buy the software, and that's it. They keep putting out updates and new versions, but don't get paid anymore.
Charging for all-new versions is something we've had on the desktop for years. iOS developers seem to be more afraid of doing this. I'm glad AgileBits has the balls to charge for the update. I'll pay it gladly, knowing how much I use and trust 1Password.