Well, it doesn't seem noteworthy, given the recent history of changes (see below), but then one never knows how significant those fixes/changes might have been for some users (including oneself). Generally any incremental bugfix or improvement is probably welcome in an archiving tool - given its relative importance in the software armoury. I had v16.03 and as a precautionary approach have just updated to v16.04 anyway, after reading this thread - I use the RAR functionality and also do some work under Vista - so, thanks for the heads-up @MilesAhead.
HISTORY of the 7-Zip
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16.04 2016-10-04
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- The bug was fixed: 7-Zip 16.03 exe installer under Vista didn't create
links in Start / Programs menu.
- Some bugs were fixed in RAR code.
16.03 2016-09-28
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- Installer and SFX modules now use some protection against DLL preloading attack.
- Some bugs were fixed in 7z, NSIS, SquashFS, RAR5 and another code.
16.02 2016-05-21
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- 7-Zip now can extract multivolume ZIP archives (z01, z02, ... , zip).
- Some bugs were fixed.