Google added voice typing to Docs last year, but it was fairly limited. Today, Google is rolling out more features to voice typing in Docs. You now have control over formatting like text selection, punctuation, and copy / paste. While this is not strictly Android, it's pretty close and we think it's cool.
You can access Google's improved voice typing engine by going to the tools menu. Google has updated its help pages with all the new commands you can use, not all of which are working for me quite yet. You will be able to say things like "highlight [color]" and "apply heading 3" to manage the document without typing.
You'll have to use Chrome to get voice typing in docs. Google says this should all be available today, so give it a shot.
- Docs Blog