In a break with FIFA tradition, the 2018 and 2022 tournaments were awarded at the same time, in 2010, leading to claims of horse-trading in the bidding process.
The 350-page Garcia report was handed to FIFA on September 5.
It summed up a year-long investigation that involved interviewing more than 75 witnesses and compiling a dossier with more than 200,000 pages and audio interviews.
Several high-profile figures have called for FIFA to publish Garcia's report, including UEFA president Michel Platini and FIFA vice-president Prince Ali Bin Al Hussein.
However, FIFA president Sepp Blatter had argued that the publication of the report would compromise the confidentiality of witnesses.
Only last month, Garcia criticised FIFA's lack of transparency.
"The investigation and adjudication process operates in most parts unseen and unheard," he said.
"That's a kind of system which might be appropriate for an intelligence agency, but not for an ethics compliance process in an international sports institution that serves the public and is the subject of intense public scrutiny.
"Transparency is not intended to embarrass certain individuals by airing dirty laundry or to harm the organisation by showing what went wrong. It's the opposite."
-AAP
