diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index fb49cfd41..b0e748576 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -5,4 +5,7 @@
 ## Other code changes
 
 * Fix reverse references in GraphQL searches
+* Regenerate R4B code for candidate final release (not quite final yet)
+* Various minor fixes for bugs found doing R4B finalization (wildcard types, version difference comparisons)
+
 
diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/FhirPublication.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/FhirPublication.java
new file mode 100644
index 000000000..1718a4710
--- /dev/null
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/FhirPublication.java
@@ -0,0 +1,49 @@
+package org.hl7.fhir.utilities;
+
+/**
+ * This enumeration is special, and hand crafted. It only supports a subset of the actual published FHIR versions, those that are still supported.
+ * @author graha
+ *
+ */
+public enum FhirPublication {
+  NULL,
+  DSTU1,
+  DSTU2,
+  DSTU2016May,
+  STU3,
+  R4,
+  R4B,
+  R5;
+
+  public static FhirPublication fromCode(String v) {
+    if (VersionUtilities.isR2Ver(v))
+      return FhirPublication.DSTU2;
+    if (VersionUtilities.isR2BVer(v))
+      return FhirPublication.DSTU2016May;
+    if (VersionUtilities.isR3Ver(v))
+      return FhirPublication.STU3;
+    if (VersionUtilities.isR4Ver(v))
+      return FhirPublication.R4;
+    if (VersionUtilities.isR4BVer(v))
+      return FhirPublication.R4B;
+    if (VersionUtilities.isR5Ver(v))
+      return FhirPublication.R5; 
+    return null;
+  }
+
+  public String toCode() {
+    switch (this) {
+    case DSTU1: return "0.01";
+    case DSTU2: return "1.0.2";
+    case DSTU2016May: return "1.4.0";
+    case STU3: return "3.0.1";
+    case R4: return "4.0.1";
+    case R4B: return "4.3.0";
+    case R5: return "5.0.0";
+    default:
+      return "??";
+    }
+  }
+
+
+}
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