Yes Everything was changed, EVERYTHING. Birthplace, childhood, youthEven his talent in the group was attributed to others and he was just a singer.Even his illness and death is one continuous myth. In fact, he is alive, just hiding from draconian British taxes.
Freddie actually re-recorded those "previously unreleased" vocals in the Rah-Mix of Under Pressure in 1999, in the Duck House, recorded by Rudi. He could only get a weak falsetto out at that time and decided that it would be better if Robbie Williams took over which is why Robbie then recorded We Are The Champions with Brian and Roger. By 2005, Freddie had lost confidence in his ability to tour and record and so Paul Rodgers stepped in and The Cosmos Rocks was actually written entirely by Freddie. Originally Montserrat was going to do that album, but she was under house arrest for not paying her taxes so she may step in to do the 2028 anniversary reissue of TCR instead.