There have been many improvements to the notation. For example, here are the improvements in the 2017 version. Each year has a similar list.

Notation has been enhanced:
The Guitar Notation display has been enhanced. You can now enter and display bends, slides, hammer-ons, and pull-offs with notation graphics indicating these elements. You can create all these in the note edit dialog, and import/export from/to XML files.
A rapid notation entry mode has been added for piano and guitar music. To do this, open up the Piano or Guitar window, use the new features to have right/left cursor keys to set the current notation position, and then click on the piano or guitar to enter notes. This is much faster than previous methods in many cases.
The notation timeline is much more visible while editing, as it is a yellow wide transparent vertical line on the notation.
Entry of Forced Accidentals is quicker now, without a pull down list required.
Band-in-a-Box® now remembers previous width & height when saving notation as image.
Band-in-a-Box® notation now has a checkbox to keep ratio the same when changing Width or Height in Save image dialog.
RealScore Chords font is now selectable on the Notation window fonts menu.
Music XML (notation export/import) has been enhanced. We've worked with Finale, GuitarPro, and Sibelius to enhance features and compatibility with Music XML. For example, we now read/write more chord types as well as guitar tab, bends, hammer-ons, pull-offs, and slides from/to XML.

Have Fun!
Peter Gannon
PG Music Inc.