Details of HP's first ARM-powered Windows 10 laptop could have just leaked, courtesy of HP Care. The site lists availability of Care Pack services for an yet to be announced HP laptop powered by the Qualcomm Snapdragon 835 SoC.
https://www.notebookcheck.net/The-HP-2US29AV-could-be-one-of-the-first-ARM-powered-Windows-10-laptops.263758.0.html