yeah, despite the statement: "OS X Mavericks v10.9.5 or later"

Probably only applies to released versions of OS X. Apple treats beta a bit differently than I think many expect. It is a bit closer to the old school definition.

Highly likely. I don't see why Apple would "patch" something that's not out yet.

Since we didn't see another DP this week, I'm assuming the Bash update will appear in the RC... hopefully that's out soon.

Yep, and if you're really hard up to get it into 10.10. Just extract the relevant binaries from the 10.9 version.

Though a better question would be what the hell are you doing with 10.10 that you need to. OS X betas are very much beta.

https://gist.github.com/mitchty/6e835bb51735099b6eba