Modder ‘gamehacker’ has released a new pre-beta version of Doom Reborn. Doom Reborn is a total conversion of the original Doom Series, aiming to remake the original Doom & Doom 2 in the id Tech 4 Engine.
Source: N4G PC Doom Reborn, Doom 1 & 2 Remakes in id Tech 4, Pre-Beta Version 1.65 available for download