We know well now that an Epic game is coming, but details on just how long it will be around for... a One Off boxset? or does the game have much longer involved plans? is yet to be seen. Here we have some answers for you.
via a solid source here on Faeit 212
more Stuff about Epic;
Game's name will be "Epic Warhanmmer - The Horus Heresy"
Release is planned for the second half 2023.
As a specialist Game, Epic will replace Aeronautica Imperalis' release
They plan with a four years release schedule for Epic. When the game is
successful; after those four years, they plan a "Second Edition", which
introduces Orks and Eldar as further factions. Can't say if this will then
be 40k or 30k Great Crusade.