It's not a new format per se, but a new installer. The linux-based extraction utilities (cabextract and similar) doesn't recognize the new exe files (yet, at least). Until then the method I use is to install everything in Windows, and then simply package the "Professional" subdirectory in a tar.bz2 archive file which gets auto-extracted by my Linux backtester. When/if I find updates or other linux-based exe extractors that can be used instead I will post here.