The following highlights are in this 1.6x-release since v1.60:

+1.60		released
+1.61		many small fixes for several platforms
+1.62		cw side tone added
		performance fix for 9700		
+1.63		started adding IC-905 (obviously untested)
		started multi-usb 

Notes:

- We know about high CPU usage on RPi.
- try the audiostack you like the most/what works for you