A little odd that the schedule is up on a publicly accessible website but not announced. You can also access the other lines by replacing franklin with the names of the other lines in the URL.
I live in East Walpole and commute via Norwood central (the same drive as going to Walpole but then less time on the train). I actually went to Norwood Depot for years, then the 2016 schedule changes reduced service there and I instead went to Norwood Central. I am concerned that a significant number of the 100 or so people that used to board the 708 train at Walpole (looking at the 2018 cps) are going to instead go to Norwood Central (Norwood Central is the same distance from Walpole Station as Foxboro, but offers 16 mins less time on the train). Or that other riders from Walpole will instead go to Norwood Central because it offers more flexibility in the PM commute as well. The Norwood Central lot is near capacity by 8:20 already and may start reaching capacity if there is any significant diversion to Norwood Central. Perhaps my concerns are unfounded.
All it would take is a 5-10% diversion from Walpole (1000 riders per day) to cause parking issues at Norwood Central. The hardest part for me to swallow on this pilot is why they messing with a 1000 rider per day station in a downtown area (albeit a limited downtown area of Walpole) to hopefully gain 190 riders per day at a station that no one can walk to and is travel time noncompetitive with other options. Perhaps there are lots of people who can't park at Mansfield or Sharon that will go to Foxboro? Or that many existing or new riders from Foxboro that will want to spend 55 minutes on the train from Foxboro.
Honestly, I hope I am wrong and the pilot goes great and spurs future investment into a Walpole station that can support both track configuration (ala Canton Junction). It was just originally conceptualized as an extension of the fairmont line which had unused capacity, and it instead it's not clear to me that even with the increased service to the inner franklin line stops, that the pilot is going to be a net positive to Franklin line ridership. Hopefully when they complete the double track from Walpole to Norfolk that will give them enough operational flexibility to run true express/local service which I think is what the line needs to attract ridership.