For all I know, we may be reading different trade magazine which are reporting different things. I received my information from last week's InfoWorld, dated July 25 1994, pgs 1 & 8. Here are some quotes from the article entitled "IBM sets PowerPC rollout for October": "The PowerOpen specification...is the PowerPC Unix OS desigtned to run applications developed on a number of different operating systems" "The operating system will ship in the fall, in time for the October announcement of IBM first PowerPC personal computers." "The 32-bit OS is expected to require a minimum of 16mb of RAM and work with PowerPC based systems from IBM and Apple. Both companies will introduce the OS under their own labels" and relating to the mac personality: "However, the Mac application services module, designed to give the OS its ability to run Mac applications will not be part of the initial announcement" So, from this I'd guess that in October, LISTSERV will be able to run on both IBM and Mac PowerPCs running AIX under PowerOpen (or is AIX becoming PowerOpen?) John