FreeBSD 10.1-RC3 to 10.1-RELEASE

% sudo freebsd-update upgrade -r 10.1-RELEASE
Password:
Looking up update.FreeBSD.org mirrors... 5 mirrors found.
Fetching metadata signature for 10.1-RC3 from update2.freebsd.org... done.
Fetching metadata index... done.
Fetching 2 metadata files... done.
Inspecting system... done.

The following components of FreeBSD seem to be installed:
kernel/generic world/base world/doc world/games

The following components of FreeBSD do not seem to be installed:
src/src

Does this look reasonable (y/n)?