Any bikeshare expansion is a good thing but it still strikes me as pretty timid. This is a classic case where network effects are the key; people will sign up to the system if it has lots and lots of stations all over the parts of the city they might want to visit. In London and Paris the systems are intensive and extensive enough that you can set out on a bikeshare journey with almost no planning; you know that wherever you're headed, within reason, there will be stations.
The economic case is also undermined by having a too-small network. How many people will pay to subscribe when such a small area is covered?
Anyway, fingers crossed, but I'll be more pleased when 200 (or more) new stations are being announced, rather than 20.