You're right that it is somewhat danced around in the initial announcement. I think a lot of people, including myself, read into it based on some hints throughout (such as where it talks about pre-trial incarceration
along with some other types), and made assumptions.
That said, there is a comment that clarifies that this is at least one area they are looking at:
The fundamental issue is that we are focusing on poor people who are bail eligible and incarcerated only because they cannot afford bail. [1]
That said, they could try to expand beyond that. In addition, this additional comment means a lot of what I said, and others have said, may not quite be accurate, at least in the future:
It is a judge. However, there is a recent court decision(Humphrey), that is creating a lot of change within the system. [2]
1: https://news.ycombinator.com/item?id=16631647
2: https://news.ycombinator.com/item?id=16631990