diff --git a/README.md b/README.md
index a50547093..3a4bb9a78 100644
--- a/README.md
+++ b/README.md
@@ -68,7 +68,10 @@ Chipsets             | Status
 --------------       | ------ 
 TI CC256x, WL183x    | complete incl. eHCIll support (chipset-cc256x)
 CSR 8811, 8510       | H4 only (chipset-csr)
+STM STLC2500D        | working, no support for custom deep sleep management (chipset-stlc2500d)
 EM 9301              | experimental use on Arduino Shield (chipset-em9301)
 CSR USB Dongles      | complete
 Broadcom USB Dongles | complete
 
+## Discussion and Community Support
+[BTstack Google Group](http://groups.google.com/group/btstack-dev)