A leaked brochure refers to a document that was not intended to be made public but was shared or released to the public without authorization. Full definition
We have managed to leak the brochure of the upcoming launch and this post will give you all the details of what is new. (motorbeam.com)
However, leaked brochure scans suggest that the launch could be just around the corner. (team-bhp.com)
Spy shots and leaked brochure images had already revealed the 2018 Toyota Alphard and 2018 Toyota Velfire's before the official introduction. (indianautosblog.com)