TfL Rail has returned to Shenfield as of yesterday using platforms 5 and 6. The scenario for the next two weeks is that as not all the works are completely finished yet, it will be every other train on weekdays will continue to terminate at Brentwood platform 4 and then every 20 minutes a train will continue to Shenfield (platform 5 only?).
I believe off peaks it's the 00, 20 and 40 past the hour trains off London Liverpool Street will terminate at Shenfield with the 10, 30 and 50 past the hour trains terminating at Brentwood. Interesting considering at Brentwood there's a tight 5 minute turnaround for trains terminating there! To make matters more complicated, during the PM peak there's trains going Gidea Park (interstablers), Brentwood and Shenfield - one train during the PM peak, the 1749 to Brentwood that has a very tight 3 minute turnaround at Brentwood to make way so that the 1756 to Shenfield can pass through on the same platform!
Will be interesting tomorrow seeing a mixture of eastbound destinations in the PM peak!