I just thought I'd let you know that the community has been updated to the new release of MyBB, fixing several vulnerabilites. We're now running MyBB 1.6.2, rather than 1.6.1.
They release new versions serveral times per year. This wasn't an expected release, it doesn't fix any bugs, it's primarily a security fix. I expect MyBB 1.6.3 will come out within the next 2 months.