I guess I did confuse the "product design" aspect of OSS from the "defect tracking / problem resolution / project documentation" aspect of OSS.

Still, it seems that it would be a awful dangerous river to cross ...

I suppose in OSS-land, where having volunteers donate their effort to a worthwhile bit of code is what the wiki / bugzilla helps to foster, the various problems of having profit-minded competitors seeing every update / milestone as a potential "contra-postive selling point" is removed.

It strikes me as just too much "insider info" to have the actual bug list posted to a public forum for a product that one presumes will be sold at a profit.