diff --git a/UPDATING b/UPDATING
index b818d4dc8d29..9ad9c04a7560 100644
--- a/UPDATING
+++ b/UPDATING
@@ -12,8 +12,8 @@ Items affecting the ports and packages system can be found in
 /usr/ports/UPDATING.  Please read that file before updating system packages
 and/or ports.
 
-NOTE TO PEOPLE WHO THINK THAT FreeBSD 14.x IS SLOW:
-	FreeBSD 14.x has many debugging features turned on, in both the kernel
+NOTE TO PEOPLE WHO THINK THAT FreeBSD 15.x IS SLOW:
+	FreeBSD 15.x has many debugging features turned on, in both the kernel
 	and userland.  These features attempt to detect incorrect use of
 	system primitives, and encourage loud failure through extra sanity
 	checking and fail stop semantics.  They also substantially impact
diff --git a/lib/clang/freebsd_cc_version.h b/lib/clang/freebsd_cc_version.h
index e9737b10d337..277744ae8624 100644
--- a/lib/clang/freebsd_cc_version.h
+++ b/lib/clang/freebsd_cc_version.h
@@ -1 +1 @@
-#define	FREEBSD_CC_VERSION		1400006
+#define	FREEBSD_CC_VERSION		1500000
diff --git a/lib/clang/include/lld/Common/Version.inc b/lib/clang/include/lld/Common/Version.inc
index 20810f686dad..b30a085c61cf 100644
--- a/lib/clang/include/lld/Common/Version.inc
+++ b/lib/clang/include/lld/Common/Version.inc
@@ -1,4 +1,4 @@
 // Local identifier in __FreeBSD_version style
-#define LLD_FREEBSD_VERSION 1400006
+#define LLD_FREEBSD_VERSION 1500000
 
 #define LLD_VERSION_STRING "16.0.6 (FreeBSD llvmorg-16.0.6-0-g7cbf1a259152-" __XSTRING(LLD_FREEBSD_VERSION) ")"
diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh
index fcdfadcad175..40821c100161 100644
--- a/sys/conf/newvers.sh
+++ b/sys/conf/newvers.sh
@@ -52,8 +52,8 @@
 #
 
 TYPE="FreeBSD"
-REVISION="14.0"
-BRANCH="ALPHA2"
+REVISION="15.0"
+BRANCH="CURRENT"
 if [ -n "${BRANCH_OVERRIDE}" ]; then
 	BRANCH=${BRANCH_OVERRIDE}
 fi
diff --git a/sys/sys/param.h b/sys/sys/param.h
index 89f277056069..da88c3e28581 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -75,7 +75,7 @@
  * cannot include sys/param.h and should only be updated here.
  */
 #undef __FreeBSD_version
-#define __FreeBSD_version 1400096
+#define __FreeBSD_version 1500000
 
 /*
  * __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD,