General

.NET Framework is no longer included in the full installer. This is due to various issues, particularly that .NET Framework often will not install as part of another installation process so this simplifies installation, reduces errors and reduces download size. The R-Instat website will have clear instructions on updating .NET. (#4841)
New options for dealing with missing values in Column Summaries dialog (and other summary dialogs). A number or percentage threshold of missing values can be specified for summaries. e.g. return missing if more than 10 missing values or return missing if more than 5% missing values. (#4701)
New dialog under Prepare > Check Data to identify problem values in a numeric column that has imported as character (#4776)
New dialog under Prepare > Check Data to anonymise an ID column using a hash function.
Improved layout of the Use Date dialog to have a more sensible grouping of choices (#4755)
The Make Date dialog now correctly returns a missing date on day 60 in non leap years when creating a date column from a year and 366 length day of year column (#4842)
The duplicates dialog has an additional option to give the index number of the duplicates. (#4757)
Facets now has the option to the include variable name in the labels (#4816)
The correlations dialog once again gives correlation values in upper half of the graph matrix output (#4815)
Improvements on the Calculator dialog (additional logical buttons, better spacing around operators) (#4833)

Climatic

The define climatic data dialog now adds a key to the data as part of the defining process and hence requires that there are no duplicate dates (within a station). The dialog also now allows the user to do a basic check for duplicates. (#4725)
Improved R code for Export to CPT dialog (#4824)
The default receiver on many climatic dialog is now more sensible, usually the element receiver (#4765)
Bug fixes in the rainfall QC dialog (#4660, #4742)
Bug fixes in the temperature QC dialog (#4746)
Further options added to the Climatic Boxplots dialog (#4668)