Hone requires a Bluetooth low energy baseband which some Android phones have, but there's no standard interface to. Once Bluetooth low energy is included in the base OS, we will be VERY interested in supporting Android phones.
We're not sure if it's technically possible for the Hone hardware to work with Pebble, but we're HUGE fans of theirs. If it turns out to be possible, we'll write an app - how cool would it be to find things from your wrist?!
From the Kickstarter FAQ (http://www.kickstarter.com/help/faq/backers#HowCanIChanMyPledAmou): "Visit the project page and click “Manage Your Pledge.” Enter a new amount in the pledge amount box. Note that you are not adding to your existing pledge; the amount you enter will be the total amount collected if the project is successfully funded."