While I'm guilty of taking the same little shortcut at times, it is technically correct to say that the current release candidate is "3.6RC1" where as 3.6.1 will be the first release (if any) between release 3.6 and release3.7. Its quibbling, I know, and its much easier to write it the way it has been used in this thread, but it can lead to confusion.
3.5.1 is the current release. 3.6RC1 is the current release candidate.