Many people (myself included) have been using wpToGo for on the go blogging and, while not bad, a first party option by WordPress is ideal.  Well, the wait is finally over.
Features:
• Configure and manage multiple blogs
• Comment moderation including the ability to reply to comments
• Create and Edit Posts including categories, tags and photos
• Create and Edit Pages
• Get notified of new comments in the Android notification bar
Here is a barcode to get the app and a video of the app in action after the break