I think it is very exciting. We need competition in the field. With native mature web browser, a key element always missing in Microsoft past attempt in trying to bring ARM based CPU to the masses, this is a key for success. Added to that the new Edge, Chrome and Chromium, it delivers to the 'average consumer' solid web browsers to choose from, to allow them to have a great experience with their ARM based system. Qualcomm seems to be able to do some nice strive forward in making their chip quiete capable for running WIndows 10.
The next big challenge is price.