Despite all the rumors about his health, Michael Jackson wants a "of the greatest comeback s in music history" in this summer in London to celebrate. The 50-year-old is on the way to London and then on Thursday will give a press conference. Jackson personally wanted a "special announcement" make his spokeswoman said today the British broadcaster Sky. " The first of the dates of the concert series at London's O2 Arena will be in the press conference will be announced. Apparently it is only in these concerts in London, it will not give subsequent tour, says an insider.