nicola
It is worth you contacting the DWP to see what date they have on your computer record, a number of members have reported that their reassessments have been deferred.
I'm afraid I can't give you any real answer as to when the ESA50 will be sent, it can be anywhere from three months to the date on the computer but is most likely to be about one month before.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems