The update brings a lot of improvements and bug fixes:
You can now automatically exit an ISL Light session altogether when you hit the stop sharing desktop button.
When connected to a Windows computer, you can now view a remote desktop full screen (Control + Esc), scroll through the remote content with the mouse wheel, and fit to screen when viewing the full screen.
When using ISL AlwaysOn remote access, you can now enable and disable the blank background mode.
The Wake-on-LAN works flawlessly when trying to wake a sleeping remote Mac.
Read Release Documentation