1.7.05 RC 2 was only out for a few hours before we decided to do full release (it was a very very minor change from RC 1), so 1.7.05 is not in RC anymore.
And then we found there was one small fix that got missed (literally a single line of code) in 1.7.05 so we pushed 1.7.06 without beta or RC quickly before too many people got the update notice.