there one thing of all will the Expansions be made for the PC.

----List of all Expansions----
Duke Caribbean: Life's A Beach
Duke: Nuclear Winter
Duke it Out in D.C.
Duke Xtreme
Duke!ZONE
Duke Assault
Duke: The Apocalypse
Duke!ZONE II

For proof they was real here a link to the Wiki.
[url=http://dukenukem.wikia.com/wiki/Category:Expansion_packs]http://dukenukem.wikia.com/wiki/Category:Expansion_packs[/url]

Erm... they were made for PC to begin with.