Apple is building on what it has learnt with the iOS autocorrect system to offer predictive word suggestions directly in the keyboard. QuickType supports many languages, including English, Chinese, British English and Spanish.
QuickType is contextually relevant, per contact. Some contacts get informal word suggestions, whereas serious conversations get more serious suggestions.
Apple used an example of a question; ‘Shall we get a movie or dinner?’. QuickType realised the context and offered suggestions for ‘dinner’ and ‘movie’ directly in the keyboard.
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From the looks of it, the best part is that it now offers multiple suggestions. In other languages there are many words typed the same but stressed differently. Both words are legal but you had no way to tell the device about it.
Furthermore, I wish they could release a tool with which we could trim the words it learns from us. Add new, remove misspelled ones or correct them.