Neearmap's latest update is dated 7 Jun - so less than two weeks ago. There is a construction fence around the entire ride envelope, not just the lift. There is a vehicle access way set up in the fencing which exits to the bottom right side of the picture.
Some of this fencing has been up for a while but can't confirm how long as the most recent update prior to June was November.
TPSN is certainly unreliable garbage but even a broken clock is right twice a day, and given the advanced set up (ie - its not just a fence to keep people out, the vehicle access path isn't something you do if you don't need it), i'd say if it doesn't start this week, it isn't far off....