[Lazarus] Differences between snapshot file names and version info in 'Help About'

[Frank Church]

I just installed a Lazarus snapshot with the file name -
Lazarus-1.0.7-40531-fpc-2.6.2-20130312-win32.exe, dated 12 March, but
when I check the version info in the Help | About it is Lazarus 1.0.7
r40502 FPC 2.6.2 i386-win32-win32/win64.

Why the mismatch? Do they refer to different information?

-- 
Frank Church

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