Microsoft has confirmed its new product names for Windows 10 and for phone users its a step back into the past, as Windows Phone disappears and Windows Mobile returns. Specifically Windows 10 Mobile.
Microsoft has gained some press for saying that Windows 10 will be the last version release for Windows which is fine given that it will be switching to a more agile, continually updated Windows As A Service delivery method. The name should really change to reflect that though.
It would make far move sense for this release to be renamed Windows rather than Windows 10, which would make the portable device version Windows Mobile.
A more sensible pair of names given the move away from version releases I think.