It looks like buy Windows 10 isn't letting its worsening phone market share deter the company from staying with its mobile-device operating system and Microsoft-branded cellular devices.

Windows Central published today, April 26, excerpts from what the site says is definitely an email from Microsoft Windows and Devices chief Terry Myerson that went to other Microsoft executives and partners.

That mail, based on Windows Central, has Myerson telling recipients the company has "a device roadmap to support that (Windows 10 Mobile) from Microsoft in addition to our OEM partners who'll be also selling an expanded lineup of phone devices based on this platform."

The mail stresses that Microsoft believes in Windows 10's value to "business customers."The note also says buy windows 8.1 professional is "committed to deliver Windows 10 on cellular devices with small screen running ARM processors." (I'm personally not surprised there is no reference to Intel-based, small-screen cellular devices, but other people who were counting on Intel-based Windows Phones may be.)

Last summer, Microsoft CEO Satya Nadella said the company planned to pare back the number of Lumia-branded phones Microsoft made, focusing on three key segments: Flagship phones for fans; business devices; and cost phones running microsoft office 2010 services like Skype and Office.