Ever since Death of the New Gods it was said that The Source used an agent to eliminate the Fourth World (the New Gods of both New Genesis and Apokolips) in order to create the Fifth World, which will be perfect. At the end of the event The Source merges New Genesis and Apokolips into one planet to create the Fifth World.  Then in the events of Final Crisis, DARKSIED and his forces manage to survive, become the DARK SIDE CLUB and bring the end of the world/universe/multiverse. Aside from that Final Crisis presented new heroes called the Super Young Team, a group of young Japanese superheroes who were revealed to be 5th World incarnations of the FOREVER PEOPLE of the 4th World.
 
Recently there have been evil duplicates of other New Gods  like the Justice League of America Vol. 2: Dr. Impossible (Mr. Miracle), Hunter (Orion), Chair (Metron), Dark Neon (Lightray), Tender Mercy (Big Barda). There have been also technologies simular to the 4th World as well: Father Box (Mother Box) and Hush Tube (Boom Tube).
 
So now with 4th World gone and the 5th Wolrd being in progress, the main questions is that will we finally see it?

Great question...hopefully something good!

" Didio said that the fifth world is Morrison's baby and taht they are waiting for him to write the big epic story he wants to tell "

"Didio said that the fifth world is Morrison's baby and taht they are waiting for him to write the big epic story he wants to tell "