If they were to make a radical change between editions making the Codex unplayable (i.e. 2nd edition to 3rd edition) I could see the need but if they don't then there's overwhelming need to have every army have a current edition Codex- it would be nice for it to be so, and I definitely think they should make it so that all armies relying on a 3rd edition codex get a 5th edition but it's not a necessity.
Just accept that not every army will have a 5th edition codex before 6th edition comes out.
Just accept that not every army will have a 5th edition codex before 6th edition comes out.
