add release note about linker deprecation

Change-Id: Iffecd275ae13737baed21b5673c5ce896d820808
diff --git a/src/main/markdown/ b/src/main/markdown/
index cb0c316..42c7a91 100644
--- a/src/main/markdown/
+++ b/src/main/markdown/
@@ -73,6 +73,17 @@
 - gwttar files are incorrect. (Fixed in the next version)
+- GWT Designer doesn't work with 2.7 and is no longer supported.
+([Source code]( is available
+if someone wishes to revive this project.)
+- IFrameLinker and XSLinker are deprecated because they don't work in
+Super Dev Mode. However, we don't have suitable replacements for all
+use cases yet. For updates and possible workarounds, see
+[issue 8997](
 <h3>Compiler changes</h3>
 - In draft mode and Super Dev Mode, all compiler optimizations are turned off for
@@ -99,10 +110,6 @@
 - Many bugfixes.
-- GWT Designer doesn't work and is no longer supported.
 <h3>Library Changes</h3>
 <h4>JDK emulation</h4>