So let me see, previously (currently) it only went anti-clockwise around Casserley Dr, then right onto Farrington Rd to Southlands; and the return journey skipped Casserley Dr and went from Karel Ave to Farrington Rd to Findlay Rd? And now it also goes around Casserley Dr clockwise towards Murdoch? That makes sense, as people along the Casserley Dr area are surely more likely to be going to Murdoch than Southlands.
Also, looks like the only change for Eastern 97 that I can see is that the small logo for Midland Station headings in the timetable has changed from a train to a bus/train combo. Everything else looks the same to me.