I've not been on W10 for a while now due to no reliable internet access.

I've just been looking (well, trying to) at the Phone app that appeared as 'new' on the list.

I can't find any information about this - every time I try a search I get things related to Windows Phone, this is an app on my laptop.

It looks like it's similar to Skype, and seems to link to Skype Directory and other Contacts lists, but is there any information anywhere on what it actually is and how it works?

Likewise can someone point me at information about my 'new' messenger app.