Okay, the new comics support should have told you that, but I took some time to test the new app. I can confirm that it has support for at least some of the rest of KF8.
I tested a couple of the demo files I uploaded back in December. I can see evidence of complex formatting like that found in 3 Men in Boat. The text wraps around the images and the drop caps work. But I'm also not sure quite how complete the KF8 support is. One of the demo files I uploaded has an embedded font and that doesn't seem to be working completely.
Still, this is very good news.
On a related note, now might be a good time to introduce you to someone. I know an author who has been teaching himself about KF8 since it launched, including stuff about KF8 fixed layout and some of the subtle tricks built into the format. Recently he has started posting demo files on his blog. His name is R. Scot Johns, and you can find his blog here.
I've known about him for a couple weeks know, but between one conference and another I hadn't had a chance to mention him. I'm glad I waited.
P.S. Here's the email that Amazon has bee sending out to the press, in case you're interested:
Amazon just updated Kindle for Android. The update brings access to illustrated children’s books, comic books, and graphic novels with full color and beautiful illustrations. You can access over 1000 children’s titles such as Brown Bear and Curious George along with popular comics including Batman, Superman and many more.
You can also now email personal documents to your “Send-to-Kindle” email address and the documents will be delivered to Kindle for Android and automatically archived in the Amazon Cloud where they will be available for re-download. Just like Kindle books, Whispersync automatically syncs your notes, highlights and last page read for personal documents. Kindle for Android is available for free from the Amazon Appstore for Android and Google Play.