The latest beta update was released today. This update includes a number of additions and fixes to the word processor, improving it and bringing it more in line with the out of the box functionality of Microsoft Word. This includes a full auto-correct feature along with minor enhancements such as auto-capitalising the first character of a new sentence.
These options can be switched off when required from the Spelling options dialog, accessible from the main Spelling dialog. As with the spell checker, only the English language is currently supported.
Update: A bug in the autocorrect meant a quick push of version 1.05 this evening. (17th Sep)