Welcome to Librarium Online!
with the release of the chaos space marine codex will this have an effect on the lost & damned codex ? And if so what chnages will this involve ?
As of now, the LaTD are very up in the air. The new Codex doesn't include any rules on them, but it's rumoured that they'll feature in the new "Daemonic" Codex coming out early next year.
As of now, I'd suggest you keep on using the list in the EoT book until we get new info from GW.