wrong patchlevel after freebsd-update install?

[Anton Shterenlikht]

On 10.0-RELEASE-p12 amd64 I updated to p13 as:

freebsd-update fetch
freebsd-update install
reboot

However, uname still shows the old patchlevel:

# uname -a
FreeBSD 001cc0f01814.anet.bris.ac.uk 10.0-RELEASE-p12 FreeBSD 10.0-RELEASE-p12 #0: Tue Nov  4 05:07:17 UTC 2014     root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
#

But freebsd-update fetch suggests I'm already at p13:
 
# freebsd-update fetch
Looking up update.FreeBSD.org mirrors... 5 mirrors found.
Fetching metadata signature for 10.0-RELEASE from update5.freebsd.org... done.
Fetching metadata index... done.
Inspecting system... done.
Preparing to download files... done.

No updates needed to update system to 10.0-RELEASE-p13.
#

So has the update p12 -> p13 succeded?

Please clarify

Thanks

Anton