add missing items to the table of contents

diff --git a/UPGRADING.INTERNALS b/UPGRADING.INTERNALS
index b7c69cc7a2b3e37a93aedcec0d1d4d244868751f..f0d3b10121687ad2a8d73040bf4e7603ea4417f2 100644 (file)
--- a/UPGRADING.INTERNALS
+++ b/UPGRADING.INTERNALS
@@ -18,6 +18,8 @@ PHP 7.0 INTERNALS UPGRADE NOTES
   p. TSRM changes
   q. gc_collect_cycles() is now hookable
   r. PDO uses size_t for lengths
+  s. Resource API changes
+  t. Optimized strings concatenation.
   u. Streams changes
 
 2. Build system changes