After a bit of a delay, Felix version 1.4 is released. You can download it from the usual source.
The main improvements are as follows:
Keep a history of your translations for a particular file, and automatically reflect any edits you make to the translation in your TM. For now, it’s available for Word and Excel; I’m planning to add the feature to PowerPoint within about a month.
Review Mode for Excel
Now Excel has a toolbar with a review mode, allowing you to correct your translations from within Excel.
See What’s New in the manual for a full list of additions and improvements.