Major changes just went into effect several months ago. This one appears to be fine tuning just the segment of the corridor between Portland and Eugene. Source Amtrak Cascades website:
Effective February 20, Trains 500, 503, 505, 506, 507 and 508 will operate according to the adjusted schedules below.
Northbound Service
- Trains 500, 506 and 508 will depart Albany two minutes earlier and Salem one minute earlier.
Southbound Service
- Trains 503 and 507 will depart Oregon City two minutes later, Salem one minute earlier and Albany one minute earlier.
- Train 505 will depart Portland one hour and five minutes later, Oregon City one hour and seven minutes later, Salem one hour and four minutes later, and Albany one hour and four minutes later.