Platon has a very fast releases which make things difficult to keep the package up to date. There is now an automatic build (build at 3am GMT+1) of platon for fedora 13,14 and 15 and for centos 5 and 6. The build on centos 6 is broken at the moment though.
The package name is platon-nightly in debroglie-nightly repository and does not interfere with the platon rpm. The usual platon rpm will remain.
To activate the new repository, you need to update debroglie-release. It will also update the repo link to the new server.