relnotes: soften compatibility claims until we have test infrastructure for them

Closes #1773

diff --git a/relnotes.txt b/relnotes.txt
index 71b0e7dfd4f902997a35d8831bb74c29062b0e75..4a09079d8b4ea3f3dfab080debe6adabb13117c1 100644 (file)
--- a/relnotes.txt
+++ b/relnotes.txt
@@ -51,7 +51,7 @@ please see the known_issues.rst file [2].)
 
 COMPATIBILITY
 
-This release is compatible with the version 1 series of
+This release should be compatible with the version 1 series of
 Tahoe-LAFS. Clients from this release can write files and
 directories in the format used by clients of all versions back
 to v1.0 (which was released March 25, 2008). Clients from this
@@ -60,6 +60,11 @@ all versions since v1.0. Servers from this release can serve
 clients of all versions back to v1.0 and clients from this
 release can use servers of all versions back to v1.0.
 
+Except for the new MDMF format, we have not made any
+deliberate compatibility changes. However we do not yet have
+the test infrastructure to continuously verify this claim. We
+intend to build such an infrastructure in the future.
+
 This is the seventeenth release in the version 1 series. This
 series of Tahoe-LAFS will be actively supported and maintained
 for the foreseeable future, and future versions of Tahoe-LAFS