Documentation/releases: Update 4.16 target date and cadence information

Change-Id: I6c8327a7cf47217d32359b304b21e806c10dcc62
Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59022
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
diff --git a/Documentation/releases/coreboot-4.16-relnotes.md b/Documentation/releases/coreboot-4.16-relnotes.md
index 16a5727..3c7eef2 100644
--- a/Documentation/releases/coreboot-4.16-relnotes.md
+++ b/Documentation/releases/coreboot-4.16-relnotes.md
@@ -1,7 +1,10 @@
 Upcoming release - coreboot 4.16
 ================================
 
-The 4.16 release is planned for May 2022.
+The 4.16 release is planned for Februrary, 2022. 
+
+We are increasing the frequency of releases in order to enable others to release quarterly on
+a fresher version of coreboot.
 
 Update this document with changes that should be in the release notes.