I bit of google led me to a build of couchbase CE named couchbase-server-community_centos6_x86_64_3.0.3-1716-rel.rpm hosted somewhere at couchbase.com
Brings up a few questions:
Why is this not annouced and hosted on the official download page?
Is the CE build of 3.0.3 ready for use but held back for some reason?
Can I start using this package I found on couchbase.com?