Deprecation Announcement

Hi,

We use CRM 2011(on premise) in our organisation and was little confused when i read the Deprecation Announcement from Microsoft. There are a few questions that i have on that.

1. Is it going to affect only the 2016 version or 2011 versions too?
2.  Does it mean that the organisation endpoint will disappear and we will no longer be able to use in our environment?
3. If we dont update the server will it still affect us?

Thanks