According to Jonathon he's now completed the final 'full' Gravity Beam release, and below, in his own words, are what's been added;
"New features:Have fun, and if you enjoy the game please let Jonathon know.
* All original music!
* New title screen!
* Improved levels!
* Two-button joystick support! Use button 2 to engage/disengage beam!
* Works on unexpanded Amiga 500s! The game should detect extra Chip RAM to reduce loading times!
* Secret stuff!
* Full documentation on how to make levels!
* Source code!
Please visit the Gravity Beam website to download the game".