The Australian Sports Anti-Doping Authority has signalled its intention to fast-track the new notices, now a Federal Court appeal period is over.
While Dons coach James Hird has mounted a solo appeal, Essendon itself has not appealed Justice John Middleton's ruling that ASADA acted lawfully in its investigation into the Bombers, paving the way for action to proceed.
"Following the expiry of the Federal Court appeal period, work is underway on the amended show-cause notices for 34 former and current Essendon football players," ASADA said in a statement on Monday.
"The amended show-cause notices will include a comprehensive summary of the evidence in support of the case against the players.
"The notices are detailed and individually tailored to each player.
"ASADA will only issue the amended show-cause notices once it is satisfied that the notices have met all the requirements of the National Anti-Doping scheme.
"Our intention is to fast-track the production of the amended notices, but we will not sacrifice thoroughness and accuracy for speed."
It's expected news of the new notices being issued will be made public.
Hird's appeal is set for a one-day hearing before three judges on Monday November 10.
