Does Apple do public betas of any operating systems like Microsoft does?
Will there be a Leopard public preview availible to download at any time? I assume no because we are now so close to its release, but I thought I would ask anyway.
No, only developers can get the 'Developer preview' apple never releases it to the public, which i think is a good idea, but you'll have to wait until march apparently. but stay tuned on January 9th as his stevieness should show us some of those 'top secret' features
Apple released a public beta of the original OS X. Many will argue that they then released a second public beta that called Cheetah that they charged people for. Fortunately they rectified this with the free upgrade to Puma about six months later.
That's the last time they had a public beta for an OS.
public beta only necessary for a software either with massive marketshare, or with the intention of expanding its marketshare, otherwise, the useful feedbacks can be get from public testing would be too small, and not worth the trouble anyway.