Well looks like the 8230 has not been forgotten by RIM, I have not heard any talks about the 8230 flip phone in a while with all the upcoming devices taking all the spot light. It seems that the guys over at BlackBerryos.com have found a leak version of OS 5.0 for this device. Am interested to see how this OS handles on the flip BlackBerry. You can pick up the OS from this links:
Megaupload : http://www.megaupload.com/?d=4NJR5U2V
I have not tested this out but if you do try it let us know what you find in the comments; You can also read more about it over at www.BlackBerryos.com
A note of caution: Do this upgrade at your own risk because it may render your device unusable if you are not familiar with OS upgrades, this is a Beta OS and not an official release.