The most current version is available at this link:
www.commanders-academy.com/luftwolf/LWAMI4_Playtest_101_NoReadme.zip .
Most notably, it has the ATC and Physics, updated UUV with more plausible sonar and advanced controls (enable button=speed control, preenable=depth control, passive sonar always on, no active mode [because of hardcoded DW 1.03 bug]), and the multirole SLAM-ER, plus all the other good stuff from LWAMI 3.02.
Also, it has a cadre of new playable hulls added for the existing classes, as well as an update to the SW sonar systems to better reflect its actual capabilities (forward looking hull sonar, basically...).
I really ought to get this out in some good version... but I just have no steam left (no pun intended) to make changes that will take a lot of time but may just have to be done over (if SCS corrects the bugs themselves).
I'll try to make a decision in a few days or so... in the meantime, enjoy the ATC demo.
Cheers,
David