Release notes for 2.9.0-beta1.

Author: rstam

Release Notes/Release Notes v2.9.0-beta1.md

@@ -0,0 +1,23 @@
+# .NET Driver Version 2.9.0-beta1 Release Notes
+
+This is a beta release for the 2.9.0 version of the driver that will be released with MongoDB server version 4.2.
+
+The main feature in 2.9.0-beta1 is pinning to a single mongos router when in a sharded transaction.
+
+An online version of these release notes is available at:
+
+https://github.com/mongodb/mongo-csharp-driver/blob/master/Release%20Notes/Release%20Notes%20v2.9.0-beta1.md
+
+The full list of JIRA issues that are currently scheduled to be resolved in this release is available at:
+
+https://jira.mongodb.org/issues/?jql=project%20%3D%20CSHARP%20AND%20fixVersion%20%3D%202.9.0%20ORDER%20BY%20key%20ASC
+
+The list may change as we approach the release date.
+
+Documentation on the .NET driver can be found at:
+
+http://mongodb.github.io/mongo-csharp-driver/
+
+Upgrading
+
+There are no known backwards breaking changes in this release.

Release Notes/Release Notes 2.9.0.md renamed to Release Notes/Release Notes v2.9.0.md

@@ -259,7 +259,7 @@ Task("PackageReleaseZipFile")
         var stagingLicenseFile = stagingDirectory.CombineWithFilePath("license.txt");
         CopyFile(licenseFile, stagingLicenseFile);
 
-        var releaseNotesFileName = "Release Notes v" + gitVersion.MajorMinorPatch + ".md";
+        var releaseNotesFileName = "Release Notes v" + gitVersion.LegacySemVer + ".md";
         var releaseNotesDirectory = solutionDirectory.Combine("Release Notes");
         var releaseNotesFile =  releaseNotesDirectory.CombineWithFilePath(releaseNotesFileName);
         var stagingDirectoryReleaseNotesFile = stagingDirectory.CombineWithFilePath(releaseNotesFileName);