diff --git a/GameData/RealismOverhaul/RO.version b/GameData/RealismOverhaul/RO.version
index d5e910da9b..512833fd30 100644
--- a/GameData/RealismOverhaul/RO.version
+++ b/GameData/RealismOverhaul/RO.version
@@ -8,9 +8,9 @@
         "ALLOW_PRE_RELEASE": false
     },
     "VERSION": {
-        "MAJOR": 15,
+        "MAJOR": 16,
         "MINOR": 0,
-        "PATCH": 1,
+        "PATCH": 0,
         "BUILD": 0
     },
     "KSP_VERSION": {
diff --git a/GameData/RealismOverhaul/changelog.cfg b/GameData/RealismOverhaul/changelog.cfg
index add842611a..ffdc491cee 100644
--- a/GameData/RealismOverhaul/changelog.cfg
+++ b/GameData/RealismOverhaul/changelog.cfg
@@ -6,13 +6,40 @@ KERBALCHANGELOG
 	website = github.com/KSP-RO/RealismOverhaul
 	VERSION
 	{
-		version = 15.0.1.0
+		version = 16.0.0.0
 		versionKSP = 1.12.3
 		CHANGE
+		{
+			change = Notes
+			subchange = This is a SAVE-BREAKING release. Resource densities have changed, many engines have had their mixture ratios changed, and some have even had their propellants changed. Further, various engine configs and parts have been removed.
+		}
+		CHANGE
 		{
 			change = What's Changed
-			subchange = Fix Oxygen missing from ServiceModule tanks early in RP-1 careers 
-			subchange = Fix persistent rotation warning dialog not remembering state in some cases
+			subchange = Update and correct the density of various propellant resources
+			subchange = Update engine mixture ratios to match current research and new densities
+			subchange = Fix wrong naming around certain tank types (Isogrid, Separate)
+			subchange = Standardize on 200atm for gas storage
+			subchange = Scud (and Véronique) updates
+			subchange = Add X-405H-2, revise reliability
+			subchange = Revise Viking and Vikas
+			subchange = Fix old Juno IV configs, add new ones
+			subchange = Delay tag removals so other mods can access them
+			subchange = Change Jet Engine MEC default to first non upgrade in RP-0
+			subchange = Improve SSME configs
+			subchange = Actually hide deprecated parts
+			subchange = Actually-remove some long-deprecated parts
+		}
+	}
+	VERSION
+	{
+		version = 15.0.1.0
+		versionKSP = 1.12.3
+		CHANGE
+		{
+			change = What's Changed
+			subchange = Fix Oxygen missing from ServiceModule tanks early in RP-1 careers 
+			subchange = Fix persistent rotation warning dialog not remembering state in some cases
 		}
 	}
 	VERSION
diff --git a/README.md b/README.md
index 62418de35f..521f433ed1 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 <p align="center">
  <a href="https://nightly.link/KSP-RO/RealismOverhaul/workflows/buildAndTest/master/RealismOverhaul.zip" rel="nofollow"><img src="https://badgen.net/badge/Nightly%20build/download/blue"></a>
  <a href="https://discord.gg/V73jjNd" rel="nofollow"><img src="https://badgen.net/discord/online-members/V73jjNd?icon=discord"></a>
- <a href="https://github.com/KSP-RO/RealismOverhaul/compare/v15.0.1.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RealismOverhaul/latest"></a>
+ <a href="https://github.com/KSP-RO/RealismOverhaul/compare/v16.0.0.0...master" rel="nofollow"><img src="https://img.shields.io/github/commits-since/KSP-RO/RealismOverhaul/latest"></a>
 </p>
 
 # Realism Overhaul