These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] app-pda/libplist-2.6.0:0/4::gentoo  USE="-test" 482 KiB
[ebuild  N     ] app-pda/libimobiledevice-glue-1.3.1:0/0.1.0::gentoo  332 KiB
[ebuild  N     ] app-pda/libusbmuxd-2.1.0:0/2.0-7::gentoo  318 KiB

Total: 3 packages (3 new), Size of downloads: 1131 KiB