Metz 40 MZ-3

The Metz 40 MZ-3 is mostly a reply to the Nikon SB-26. Compared to the 40 MZ-2 its advantages are:

I think the above apply only to Nikons. Note that high-speed sync is still missing. The following is independent of the camera used.

the zoom head now goes from 24mm to 105mm (the 40 MZ-2 goes only to 85mm).
built-in wide angle diffusor down to 20mm.
the TTL-easy function of the 50 MZ-5 is present. This is a simplified mode to reduce the possibility of errors by the photographer.

From an article in Chasseur d'Images (#188, November 1996):

Remote wireless auto mode. Similar to the already existing remote wireless TTL, but the light is measured by the flash sensor instead of the camera sensor. This allows the easy use of multi-flash with non-TTL cameras.
a new mode places automatically the zoom head in a setting one step wider than the lens being used (example 35mm with a 50mm lens). This is to give more uniform coverage.
the strobo mode can be used as a modeling light
a fast mode that reduces the GN and the charging timne (? this exists in most Metzs)
a new lock on the function button to prevent accidental changing of the flash settings.
there will be an updated version of the SCA 3000 adapter for Canon.