Welcome, @eghasemi
The fastest way to incorporate this reference genome at the EU, AU or ORG servers (and many others) is to use it as a custom reference genome. That can be promoted to a custom build to create a custom database “metadata” key that can be assigned to datasets as needed. The input is a simple fasta file. Make sure to get the matching reference annotation at the same time to avoid problems later on.
This prior Q&A has links to the “how-to”. You can click on the tags to find more examples in different contexts. → Custom genome + custom build: How to use a genome that is not natively indexed at the server you are working at - #2 by jennaj
The EU server admins can also comment, but as far as I know, new reference genomes will be indexed sometime later this year for all three UseGalaxy.* servers.
If you want to post back the exact link to the reference genome version(s) you are interesting in working with, we keep track of requests for incorporation later on. Public sources are best: NCBI SRA and UCSC are two examples.
Hope that helps!