Filing for the record, I expect there will be no separate packages in the next versions at all.
mariadb-tokudb-engine-10.0 deb packages appear to be empty. An attempt to install them via apt-get does not cause any errors, but the library does not get installed. The size of the packages is ~2.8 Kb
Maybe we should upload the libraries for the supported Ubuntu/Debian versions to our FTP or something – for those who want to try it but cannot build from source.