Acejavelin,
I am going to go out on a limb here and say that you meant to put 6.2 SP1 instead of 6.1 SP1 for your Subject line.
Also, there are release notes for that at the bottom as usual, but it is in .pdf format instead of .txt or .doc extensions. The major thing, for me, is a security update of SSL from OpenSSL 1.0.2a to OpenSSL 1.0.2h which came out on May 3, 2016. The latest long-term version of 1.0.2 is (j) which came out on September 26, 2016, but I am sure there is a reason they didn't go to that one. It is probably not a good one, but they do have one I am sure.
There are also multiple MNs that have been cleared up as well.
Thanks,
TE