Bruce wrote:

The line will part-close every weekend until Christmas, when it will
shut for four days. It will also close for a weekend in January and
for four days at Easter.

And no doubt TfL will also go shutting down the Central and/or (most likely
*and*) the District whilst National Express shuts down the Liverpool Street
line and everyone pretends the 25 bus is adequate for all east London's
transport needs without even laying on extra buses.