Been able to open in Linux for years
Although a welcomed move by the Beast it has been possible to use tools in Linux (tools that may not have been legal in the USA due to patent law) to open and convert .pst files to a useful format.
Ubuntu has has a specific feature that converts the files to evolution since 9.04 (i believe) .
I always noticed in the past that you can convert pretty much all mail client info to another easily as long as it wasn't Outlook (all the other major email clients had converting tools - only a Microsoft product didn't)
Beer = because its been a hot had day at work and beer is the only hope.