TechSliver: iOS 5, already bringing many new features to Apple devices, revealed a new feature which isn’t known to many users yet. Emoji, originally meaning pictograph, the word literally means e “picture” + moji “letter”. The emoticons, popular in Japan are now a feature that iOS users will be able to enjoy as well. Here is a quick guide on how to enable these features on iOS 5.
Not really new. I have had emoji enabled since 4.0.