Update NEWS for IC-7850/7851

Also set tentative release date of 3.2 to 30 June 2017.

NEWS

@@ -5,6 +5,10 @@ Copyright (C) 2000-2016  Stephane Fillod, and others
 
 Please send Hamlib bug reports to hamlib-developer@lists.sourceforge.net
 
+Version 3.2
+        2017-06-30
+        * New models, IC-7850/IC-7851.  Mike, W9MDB
+
 Version 3.1
 	2016-12-31
 	* Fix kenwood_set_mode for ts590s and mode CW, RTTY or AM.