NewFeatures.md

@@ -86,6 +86,8 @@ Dynare 4.6-unstable
 
  - options `print` and `noprint` added to `perfect_foresight_solver` (#1647)
 
+ - Can pass expressions as intervals to `irf_calibration` and `moment_calibration`. This breaks the previous syntax, requiring that the lower/upper bound be separated by commas (preprocessor#12)
+
 
 Dynare 4.5
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