Over 310+ changes has gone into this since the release.
Lots of minor fixes and tweaks but new features. The biggest new things is that there is now an editor to create the file coloring rules. Also multiple file coloring profiles are supported.
A breaking change is that the regular expressions engine is changed to one that is perl compatible, So writing regular expressions should now be easier. But existing expressions might need to be changed.
See change log for more information about change