diff --git a/website/content/en/releases/13.0R/relnotes.adoc b/website/content/en/releases/13.0R/relnotes.adoc
--- a/website/content/en/releases/13.0R/relnotes.adoc
+++ b/website/content/en/releases/13.0R/relnotes.adoc
@@ -479,6 +479,10 @@
 The amd64 architecture now supports 57-bit virtual addresses (LA57) on supported CPUs.  This permits user processes to use up to 56 bits of virtual address space.  This also includes support for five layer nested page tables used by bhyve.  gitref:9ce875d9b59d[repository=src] {{< sponsored "The FreeBSD Foundation" >}}
 
 [[ARM-ARM64]]
+=== arm64
+
+The 64-bit ARM architecture known as arm64 or AArch64 is promoted to Tier-1 status for FreeBSD 13. https://lists.freebsd.org/pipermail/freebsd-arm/2021-April/023602.html[Announcement]
+
 === ARMv5
 
 Removed support for version 5 of the 32-bit ARM architecture.