To add a few more details (having tried to help the BOM earlier)
MicroProfile BOM so far never manifested, but there were discussions in one or the other thread to create a proper separation between
"microprofile-parent" - which would be an "internal" Parent POM to be used by any project in need of common structures - and
"microprofile-bom" - a true "Bill of Materials" for other projects outside MicroProfile or Eclipse to use the right combination of MP features and where necessary the underlying dependencies.
Werner