A partir do openSUSE Diretrizes de nomenclatura de pacotes - Sensibilidade a maiúsculas e minúsculas :
In openSUSE packaging, the maintainer should use his/her best judgement when considering how to name the package. While case sensitivity is not a mandatory requirement, case should only be used where necessary. Keep in mind to respect the wishes of the upstream maintainers. If they refer to their application as "ORBit", you should use "ORBit" as the package name, and not "orbit". However, if they do not express any preference of case, you should default to lowercase naming.
em contraste com as Diretrizes de nomenclatura - Nomenclatura geral do Fedora
When naming a package you can take some cues from the name of the upstream tarball, project name from which this software came, and what has been used for this package by other distributions/packagers in the past. Do not just blindly follow those examples, however, as package names should strive to be consistent within Fedora more than consistent between distros. You should generally use lowercase and turn underscores into dashes unless there's a compelling reason to follow a different upstream convention.