Good catch, I had not noticed the added parking lane. Perhaps those spaces are to serve the new businesses going into that face of the garage.
Interestingly, the Draft 2050 Cost Feasible Plan from the North Florida TPO includes a project to construct "Context-sensitive improvements: Safety, Bicycle, Pedestrian and [intersection upgrades*]" with $1,650,000 proposed for Construction in 2029 or 2030. The project limits are from I-95 to Liberty Street.
* the table cell with the project description is cut off, but similar context-sensitive projects include "and intersection upgrades."