Update README.md

README.md

@@ -5,7 +5,8 @@ pipeline_tag: text-generation
 
 # 2-bit LLMs
 
-This is a model collection of mostly larger LLMs quantized to 2 bit with the novel quip# inspired approach in llama.cpp
+This is a model collection of mostly larger LLMs quantized to 2 bit with the novel quip# inspired approach in llama.cpp  
+Sometimes both xs and xxs are available.  
 
 ### Overview
 - WizardLM-70b