Automatch rules allow you to visually align lines in structured files using extracted key values.
IFilter support helps extracting text from non-text files, or remove formatting, e.g. you can view HTML files without tags.
It was possible to ignore comments before with RegExps, but now you can do this with simple option, and it will work for all supported syntaxes.
Separate mode will help in case you don't need to align different lines.
Unlock scroll - finally you can scroll panes independently.
Folder comparison - generation of multiple comparison reports is now available from menu,
and it will help you to prepare command line for unattended usage.