accepted, rejected, or requests for changes in special issue Recently, I have gone through a special issue of a journal and in the special issue, in notification to the author section, it's mentioned that 


  Reviews returned to authors. Papers will be either accepted, rejected,
  or returned to the authors with requests for changes


There is only mentioned about the revised manuscript due date and special issue published date. Does that mean "returned to the authors with requests for changes" is another form of acceptance? or after submitting the revised document there may become a chance of the rejection?

Thanks in advance.
"Returned to authors with requests for changes" is a "revise" decision. That means the journal wants the authors to make certain changes (e.g., gather more data) before making a decision.

After a revise decision, my experience is that acceptance is the most likely final result. Certainly a paper that's returned to the authors for revision is not going to be desk rejected anymore. However, it's not a guarantee - you still have to convince the editors &amp; reviewers to accept your paper.