upgrade to 10.3 from 10.1

[asv]

Hello everyone!
I don't feel confident to proceed with 

# freebsd-update upgrade -r 10.3-RELEASE

from my 10.1-RELEASE-p31.
I read on the FreeBSD website: "Systems running 9.3-RELEASE,10.3-RC[12]
can upgrade as follows" but usually releases in the middle are
included.
I've tried to search a bit about it but I didn't find much.

Am I just paranoid for not seeing 10.1 and 10.2 in the list?
Did anybody try this operation already?
I also have jails there, I want to be very prudent on this machine.

Thanks in advance.