twrp release: add version explanation

Change-Id: I68ec1b35b77e352c4c92533fc55adc5b4664ddde
diff --git a/_posts/2020-12-31-twrp-3.5.0-released.markdown b/_posts/2020-12-31-twrp-3.5.0-released.markdown
index d8b45ff..d415ed4 100644
--- a/_posts/2020-12-31-twrp-3.5.0-released.markdown
+++ b/_posts/2020-12-31-twrp-3.5.0-released.markdown
@@ -19,6 +19,10 @@
 - AndroidableDroid
 - Noah Jacobson
 
+You will notice a new version scheme. Devices that are built in the android-9 tree will be suffixed with 3.5.0_9.
+Devices built in the android-10 tree will be suffixed with 10 like 3.5.0_10. Each device tree update will have a
+final suffix for any updates made for the device like 3.5.0_10-1.
+
 And finally myself, bigbiff has put in a lot of work over the past year while Dees_Troy is able to get back to
 helping us again with the Android-11 release. I have started a bringup for an Android-11 merge, and will be working
 on the Pixel 5 bringup. I hope the progression is shorter in 2021.