Dr Ivan D. Reid wrote:
http://www.tfl.gov.uk/tfl/press-cent...t.asp?prID=895

Incidentally, how is the line going to look once T5 is opened? Is it
still going to be a loop, with three stations (T4, T5, T123 in that
order from central London), or is the line going to split after Hatton
Cross with some trains going to T4 and some to T123 & T5?

Patrick