It seems to me the quality of apps will improve greatly with the new features available in 3.0
As a developer, I disagree, for the most part. The new features in 3.0 aren't for improving quality - most of them don't really work for adding new features to old apps. Instead they are mostly for allowing the creation of new apps that couldn't be made before. And the new features that could be added to old apps...other than instant messaging and the server-push, they are too complicated, most developers won't go back to their older projects and add them; the effort wouldn't be worth it.
If you are talking about cut and paste, that's just going to work, all apps you already have that use text boxes will just let you cut and paste, no new updates or apps required.