The picture below shows the improvements being made; the plan was greatly scaled down due to the of unwillingness of state and local transportation officials to consider effective traffic calming on Market Street. Crossing the street will not be much easier than it is today, still Station Square offers new public space in an area starved for it.
But the lack of consideration for bikes is troubling. It will still be difficult to enter 30th Station from Market Street going westbound; you'll have to navigate through car traffic that is struggling to get onto the 76 and 676 ramps. (A bike signal would help give bikes a few seconds lead time). The new contraflow lane on S 30th St offered the promise of good access from Walnut and Chestnut Streets, unfortunately northbound cyclists who arrive at Market St have no legal way to cross it to access 30th Station's entrances.
The lack of consideration is not exclusive this project; walk your bike seems to be the trend in urban public right of ways such as the new Penn Park (on the bridge ramps.) Station Square leaves plenty of leeway of motor vehicles and a few design touches would have made this space a safe bikeway and bike parking location that wouldn't interfere with the pedestrian plaza feel of the site.