According to a recent tweet from an iOS developer, Apple has started sending out emails to iOS developers, offering them a chance to purchase a 42mm Apple Watch Sport with a Blue Sport Band with a guaranteed shipment date of April 28, 2015.
However, this isn't just a bona fide act, as Apple is interested in supplying more developers with Apple Watch units so that they can begin testing apps on. Also, it seems that Apple Watch quantities are limited and developers eligible to purchase a watch will be randomly chosen. Here's what Apple says in its email:
"We want to help give Apple developers the opportunity to test their WatchKit apps on Apple Watch as soon as it is available. You have the chance to purchase one (1) Apple Watch Sport with 42mm Silver Aluminum Case and Blue Sport Band that's guaranteed to ship by April 28, 2015. This opportunity is offered by random selection and quantities are limited. Register now though April 23 at 10 a.m. PDT. We'll let you know your status on April 23."
The reason why Apple chose the 42mm Aluminum Apple Watch Sport version could be because it's one of the versions with a big supply. Thus, if you are an iOS developer and you have received this email from Apple, then you will be able to receive the Apple Watch Sport one week from today and four days after customers should start receiving their orders.