-evolution: SyncEvolution for GNOME Evolution
-amd64: x86-64 binary (default is 32 bit)

Before 0.8.1 the evolution-2.6/8/12 suffix determined with which
Evolution the binary was compatible with. As of 0.8.1, the same binary
is compatible with all supported Evolution versions.

See http://www.estamos.de/projects/SyncML/Compatibility.html