John's latest OS X VM's are always at:
ftp://ftp.smalltalkconsulting.com/

Latest mainline Squeak one is Squeak 3.8.19beta2U.app.zip

There are other ones for various purposes in his Experimental folder.

3.8.x Release Notes.rtf tells all about the changes.

Ken G. Brown

>Sophie (itsme213) itsme213 at hotmail.com
>Wed Dec 10 23:38:48 UTC 2008
>
>"Bert Freudenberg" <bert at freudenbergs.de> wrote
>
>>> I would like one that is stable,
>>> fast, and osx-feature-rich ... strictly in that order :-)
>>
>>
>> Use the Gold edition then.
>
>Got a URL :-) ?
>
>I'm asking because the squeak.org VMs seem different from the Mac/VM work
>John McIntosh is doing, which seems to be Beta; and then there seem to be
>more OSX VMs pointed at by http://www.squeakvm.org/unix/  I think many
>Squeak-folks use OSX, so I'm hopeful I can avoid blind trial-and-error