NY00123, on 01 May 2012 - 02:20 PM, said:
The README.DOC says this is a build of v1.1, which matches the file dates.
LameDuke: 1994-12-30
v0.99: 1996-01-04
v1.0: 1996-01-29
v1.1: 1996-02-20
v1.1 Computer Gaming World one-level demo: 1996-03-04
v1.3D Registered: 1996-04-19
v1.3D Shareware: 1996-04-24
v1.4: 1996-10-10
v1.5: 1996-12-11
Mac Shareware: 1997-07-04
Of the files in the zip, only DEFS.CON, DEMO1.DMO, DUKE3D.EXE, GAME.CON, LICENSE.DOC, and USER.CON are unique to this version when compared against v1.1 and v1.3D Shareware. (The GRP matches v1.1.

The only thing that stood out to me is the following:
DEFS.CON:define CYCLOIDSPRITE 29 DEFS.CON:define CYCLOIDAMMO 42 DEFS.CON:define CYCLOIDBLAST 1642 DEFS.CON:define CYCLOID 2510 DEFS.CON:define CYCLOID_WEAPON 7 GAME.CON:actor CYCLOIDAMMO GAME.CON: addammo CYCLOID_WEAPON CYCLOIDAMMOAMOUNT quote 14 GAME.CON: ifspawnedby CYCLOIDAMMO state getcode GAME.CON:actor CYCLOIDSPRITE GAME.CON: addweapon CYCLOID_WEAPON 48 quote 87 GAME.CON: ifspawnedby CYCLOIDSPRITE state getweaponcode GAME.CON:actor CYCLOIDBLAST FREEZETHROWER_WEAPON_STRENGTH enda USER.CON:define MAXCYCLOIDAMMO 99 USER.CON: MAXCYCLOIDAMMO MAXTRIPBOMBAMMO MAXFREEZEAMMO USER.CON:define CYCLOIDAMMOAMOUNT 10 USER.CON:definequote 14 AMMO FOR CYCLOID USER.CON:definequote 87 CYCLOID WEAPON
The Devastator was originally called the Cycloid Weapon, which makes logical sense.
When I compared the CON files I saw stuff removed that I had never seen before that interested me, so I will need to do a study of all the CON files from the versions at some point and add that to my website.
I think we can justify calling this the "true" v1.2.