Most people who write homebrew-programs/emulators do it for fun or other personal reasons, if then somebody comes along and betrays the author´s trust by spilling a private beta out all over the web without the author´s consent this usually takes a lot of the fun away.
It´s a tricky business writing emulators: not sending out private beta´s will get you a lot of flames stating it is fake and all that crap taking away a lot of the fun. But on the other hand sending out private beta´s will ensure you that no fake-flames will be posted but it does put you at risk of seeing your hard work leaked, taking away the fun too.
Anyways it is always a sad thing when an individual can take away the fun out of something for someone else when trust is betrayed. In turn this ruined my own fun too, because I (and a lot of other gp32 users) were quite looking forward to this upcoming neopocket emulator. Seeing those games run on a better handheld screen than the neopocket´s one, would have been a real kick. But alas it is not meant to be, so I can only respect the author´s decision.
But hey there´s more than that to experienced on this fantastic little machine! Don´t look sad. Just keep on coding, reading & posting messages on the boards and....using the gp32 of course.
Cheers, Mark