Release notes for 2.8.0.

Author: rstam

Release Notes/Release Notes v2.8.0.md

@@ -1,3 +1,23 @@
 # .NET Driver Version 2.8.0 Release Notes
 
-This file is a place holder.
+This is a minor release.
+
+An online version of these release notes is available at:
+
+<https://github.com/mongodb/mongo-csharp-driver/blob/master/Release%20Notes/Release%20Notes%20v2.8.0.md>
+
+The list of JIRA tickets resolved in this release is available at:
+
+<https://jira.mongodb.org/issues/?jql=project%20%3D%20CSHARP%20AND%20fixVersion%20%3D%202.8.0%20ORDER%20BY%20key%20ASC>
+
+Documentation on the .NET driver can be found at:
+
+<http://mongodb.github.io/mongo-csharp-driver/>
+
+## Upgrading
+
+* The minimum .NET Framework version we support has been changed from 4.5 to 4.5.2.
+
+* If you were having compatibility problems when adding a dependency (either directly or indirectly) on either
+System.Runtime.InteropServices.RuntimeInformation or DnsClient this is a recommended upgrade. We now depend
+on the latest version of those packages.