The Evening Standard reported on Friday that this might happen as LU and the unions were having further discussions over safety.
"Tube union leaders are today expected to call off their 48-hour go-slow which threatened to bring travel chaos across the capital.
"Senior officers of the RMT, which ordered the industrial action with more to follow, are meeting in emergency session awaiting a letter from Tim O'Toole, London Underground managing director, confirming details of proposed improvements in safety standards.......
"RMT leader Bob Crow warned: "Until we see the proposals in writing, next week's safety go-slow remains on." "
Now I am sure this is nothing, I repeat nothing, to do with today's World Cup Rugby "Sweet Chariot" celebration parade running through central London this lunchtime which a million people are predicted to attend.
By the way if you are planning on watching the parade the tube's website have a helpful (for once) press release as to which stations might be better to use and which ones to avoid.