In the description of the new Release 5.1 features, I forgot to mention something which a number of people have asked for, namely
Follow-up Analyses after Three Factor ANOVA
A new ANOVA Follow-up data analysis tool has been added. This tool allows the user to perform Contrast and Tukey HSD (or Tukey-Kramer) analyses after Three Factor ANOVA.
This tool can be used with both balanced and unbalanced models and can actually be employed after any type of ANOVA (not just Three Factor ANOVA) provided you have the appropriate descriptive data and the values of MSE and dfE created by any omnibus ANOVA data analysis tool.
Quick Update
Release 5.1 is now available for users of Excel 2007, 2010, 2013 and 2016 (Windows). All the examples files have been updated and good progress has been made updating the website for compatibility with Rel 5.1. In particular, the website now includes webpages on the new ANOVA Follow-up data analysis tool as well as 2^k Factorial Design and Correspondence Analysis.
I had originally planned to improve the ARIMA support in Rel 5.1, but was unable to get it tested in time. This feature will be included in the next release.