Hi joe,
The ESA reassessment process has built up huge backlogs, so much so that many areas have suspended reassessments for the time being. Unfortunately, this is purely a matter of procedure rather than legislation so we have no way of knowing how long this situation might continue - indeed, we do have some members who have already been reassessed despite the backlog.
I'm afraid that the only way to find out what is happening is to contact DWP and ask. Doing so should not have any effect on the status of your claim.
Nothing on this board constitutes legal advice - always consult a professional about specific problems