There might be a niche for a few freighter conversions. With them being gradually dropped from pax flights, their second hand value is negligible which may make the cost of modifications worth doing as the airframes are still relatively young. A low purchase price, expensive modifications but a long service life afterwards might swing the balance for a few operators.
The airports that can accommodate A380s are limited but fuel is likely to remain cheap for a few years so a handful may soldier on in the freight role.