You may have recently noticed a few changes in the look and feel of your Skype account. We’ve been working to bring Skype and Microsoft closer together and are excited to announce that soon you will be able to use your Skype Name to sign into other Microsoft services like Xbox, Office and OneDrive. With a single sign-in (and an email address for certain services) you will soon be able to have fun on Xbox Live, access your photos and documents through OneDrive, check your email on Outlook.com, and connect with your friends and family on Skype.
If you have noticed some changes to the Skype sign-in screen, password change and account recovery flow, that’s because these are now managed by Microsoft. None of these changes will affect your ability to use Skype—as usual, you can still sign in using your Skype Name. For all the latest Skype features, always make sure you’re on the latest version of Skype.
Source: Get more from Skype - Access Microsoft services - Skype Blogs- Skype Blogs