This didn't happen, sadly. I've always meant to try to contact Adam Atkinson
to see if he made any further progress with this, but have never got round
to it.
The Perl script he used to generate the Z-code files from the original
Phoenix sources is available on the IF-Archive. Sadly the Phoenix sources
aren't re-distributable, but they are known to exist, and with the Perl
script can be used to generate Z-code files for some of the remaining games.
I think the main stumbling block is that more testing of the resulting
Z-code files is needed.
In better news on the Phoenix front, Richard Bos has done a detailed
walkthrough of Acheton and pointed out some issues with the generated Z-code
version. One day I hope to actually look into the issues and fix the Perl
script enough that the Z-code Acheton is in a state to be released.
David