ORG-NEWS: Document changes to `org-timer-default-timer'

etc/ORG-NEWS

@@ -96,6 +96,10 @@ functions.  The Org version of these functions skips over inline tasks
 *** Behavior of ~org-return~ changed
 If point is before or after the headline title, insert newline without
 changing the headline.
+*** ~org-timer-default-timer~ type changed from number to string
+If you have, in your configuration, something like =(setq
+org-timer-default-timer 10)= replace it with =(setq
+org-timer-default-timer "10")=.
 ** Removed functions
 *** Removed function ~org-translate-time~
 Use ~org-timestamp-translate~ instead.
@@ -385,6 +389,9 @@ added to headline text.
 Tables and source blocks can now have captions.  Additionally, lists
 of tables and lists of listings can be inserted in the document with
 =#+TOC= keyword.
+*** Countdown timer support hh:mm:ss format
+In addition to setting countdown timers in minutes, they can also be
+set using the hh:mm:ss format.
 ** Miscellaneous
 *** Strip all meta data from ITEM special property
 ITEM special property does not contain TODO, priority or tags anymore.