Singleish is available for pre-order through Amazon.com today! It will hit your Kindle on May 22nd.
The link to pre-order is:
Not an e-book person? Well, in 3-5 days you’ll be able to order a print version of Singleish on Amazon.com. Or, you can order it today from CreateSpace (an Amazon partner) today!
Pretty soon, it will be available at Barnes & Noble (ebook only), iTunes and several other distribution channels.