Adding to the previous posts by
@Old Hill Bank and
@The Planner, from a brief glance at the document linked and the overview on page 18, in terms of new stations
(feel free to correct me):
- Worcestershire Parkway (under construction, opening 2019/20)
- Camp Hill Line (under advanced development I understand)
- Willenhall & Darlaston (under development)
I know the plans for University will most likely be going ahead once funding is secured as it is quite a priority in terms of implementation (due to current crowding issues). The others as already mentioned are far less likely for the time being.