update cran comments

Author: thomasp85

cran-comments.md

@@ -1,6 +1,9 @@
-This is a small patch release preparing ggplot2 for changes in the ragg package.
-Further it add infrastructure to help reverse dependencies gracefully prepare
-for the next major ggplot2 release.
+This is a major release of ggplot2. Among other things it includes an adaption
+of S7 for all the S3 classes and methods that were currently in use.
+Unfortunately such a change is not without issue with the number of reverse
+dependencies that ggplot2 has as many packages wrongfully checks the internals
+of ggplot2 objects in their tests.
 
-This release breaks a test in SimNPH, but we are in contact with them and a fix
-for this should land on CRAN very soon.
+Because of this you should expect a larger than usual number of breaking
+packages. We have been very diligent to reach out to all maintainers over the
+last 2-3 months and provided resolutions but breakages are still to be expected.