diff --git a/README.md b/README.md
index f71c565..c997a9d 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,9 @@ A firmware for the
 Written in an incremental style. Requires microscheme newer than 0.8; at
 the time of this writing only available on git master.
 
+Currently only supports the standard PCB-based Atreus pinout; support
+for Teensy models will be added later.
+
 ## License
 
 Copyright © 2014 Phil Hagelberg and contributors