Following an email I have received from SM I am happy to be able to let you know that your existing WW2 support files will work in WW P8. You will also be able to transfer your DAT and MOR files over if required. Support for new P8 Ryan and Alyson figures is included in the Poser 8 installer.

Existing WW2 users will not require any update, the version in Poser 8 is essentially the same just configured to work in Poser 8 and wxPython.