docs: def upcoming_releases(self, product):
          """
          Get upcoming releases for this product.
  
          Specifically we search for releases with a GA date greater-than or
          equal to today's date.
  
          :param product: str, eg. "ceph"
          :returns: deferred that when fired returns a list of Munch (dict-like)
                    objects representing all releases, sorted by shortname.
          """
          url = 'api/v6/releases/'
          url = url + '?product__shortname=' + product
          url = url + '&ga_date__gte=' + date.today().strftime('%Y-%m-%d')
          url = url + '&ordering=shortname_sort'
          releases = yield self._get(url)
          result = munchify(releases)
          defer.returnValue(result)