diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -3,5 +3,5 @@
   <https://download.bitcoinabc.org/0.17.1/>
 
 This release includes the following features and fixes:
- - Added CORS headers and pre-flight request support via RPC
-
+ - Added CORS headers and pre-flight request support via RPC via required flag `-rpccorsdomain`.
+ - Allow block candidates greater than 16MB to be submitted via RPC.
diff --git a/src/qt/intro.cpp b/src/qt/intro.cpp
--- a/src/qt/intro.cpp
+++ b/src/qt/intro.cpp
@@ -22,7 +22,7 @@
 /**
  * Minimum free space (in GB) needed for data directory.
  */
-static const uint64_t BLOCK_CHAIN_SIZE = 170;
+static const uint64_t BLOCK_CHAIN_SIZE = 180;
 /**
  * Minimum free space (in GB) needed for data directory when pruned; Does not
  * include prune target.