diff --git a/README.md b/README.md
index d339a2b..03fa931 100644
--- a/README.md
+++ b/README.md
@@ -122,6 +122,21 @@ the hooking engine can't cheat and just put the whole function into the
 trampoline. Instead the jump in the trampoline needs to be modified so it jumps
 back to the original destinations
 
+Test case: RIP relative
+=======================
+
+XXX TODO XXX
+
+Test case: AVX & RDRAND
+=======================
+The AMD64 instruction set is extended with every CPU generation. Becayse the
+hooking engines need to know the instruction lengths and their side effects to
+properly apply their hooks, they need to keep up.
+
+The actual code in the test case is boring and doesn't matter. I'm sure there
+are disagreements on whether I've picked good candidates of "exotic" or new
+instructions, but those were the first that came to mind.
+
 (Preliminary) Results
 =====================
 +----------+-----+------+------------+---+------+----+-------+