Document ARM architecture adjustments

configure/CONFIG_SITE

@@ -67,8 +67,7 @@
 #       linux-586               (linux-x86 host)
 #       linux-686               (linux-x86 host)
 #       linux-arm               (linux-x86 or -x86_64 host)
-#       linux-arm_eb            (linux-x86 host)
-#       linux-arm_el            (linux-x86 host)
+#       linux-aarch64           (linux-x86_64 host)
 #       linux-athlon            (linux-x86 host)
 #       linux-cris              (Axis GNU crosscompiler on linux-x86 host)
 #       linux-cris_v10          (Axis GNU crosscompiler on linux-x86 host)
@@ -76,9 +75,6 @@
 #       linux-microblaze
 #       linux-xscale_be
 #       vxWorks-486
-#       vxWorks-68040
-#       vxWorks-68040lc
-#       vxWorks-68060
 #       vxWorks-pentium
 #       vxWorks-ppc32           (32-bit PowerPC CPUs with full FPU)
 #       vxWorks-ppc32sf         (32-bit PowerPC CPUs without FPU)

documentation/RELEASE_NOTES.md

@@ -19,6 +19,13 @@ should also be read to understand what has changed since earlier releases.
 
 ## EPICS Release 7.0.4.1
 
+### ARM Architecture Changes
+
+Build configuration files for a new cross-build architecture `linux-aarch64`
+have been added, and the targets `linux-arm_el` and `linux-arm_eb` removed.
+The 64-bit ARM architecture target doesn't have build files for self-hosting
+yet but they should be relatively easy to add, contributions welcome!
+
 ### Bug fixes
 
 The following bugs/issues have fixes included in this release: