I had the opportunity to handle the new Seiko Alpinist (SARB063) recently. This watch uses the same case as the SKX007, 009, 011 and other color variants, collectively known as the SKX divers. The Alpinist is powered by the 6R15 movement whereas the SKX divers are powered by the 7S26 movement. Below are some quick photos showing the features of the watch.
Yeoman's Watch Review 