Either I'm looking at it wrongly, or ScotRail are restoring the 15 min Edinburgh - Glasgow via Falkirk High off-peak service but only on Saturdays? (Between about 0815 and 1715.)
Looks like it, although not the old calling patterns. Linlithgow, Polmont and Falkirk High will be called at by all 4 services, with Croy only by 2. Giving Linlithgow and Polmont a 6tph service to Edinburgh at the weekend.