http://www.techradar.com/news/microsofts-surface-pro-lte-might-not-emerge-until-spring-2018

At the close of last month, Microsoft announced that the Surface Pro LTE would go on sale come December 1, but now it appears that the spin on the hybrid, which sports cellular connectivity, might not be out until next spring.

As Neowin reports, Microsoft updated its product page for the Surface Pro LTE to state that: “The new Surface Pro with LTE will be made available for purchase at retail Spring 2018. We're excited to bring you a Surface Pro that is now faster, lighter, quieter, and more connected than ever.”