Couchbase upgrade error

I am trying to upgrade from 3.0.1 community edition to 4.0 community edition on CentOS 6.x but I receive “failed dependencies” - see below.
i have two servers, both showing the exact same error.

$ sudo rpm -U couchbase-server-community-4.0.0-centos6.x86_64.rpm
error: Failed dependencies:
couchbase-server conflicts with couchbase-server-community-4.0.0-4051.x86_64

Also couchbase-server-community-3.0.1-centos6.x86_64.rpm was 205Mb, while the new couchbase-server-community-4.0.0-centos6.x86_64.rpm is only 85Mb.
That is more than strange. Would this be a faulty rpm or functionalities got removed from 4.0 counting for over 50% of the package size?

Reading it seems that the issue comes from the renaming of the community edition from couchbase-server to couchbase-server-community, essentially breaking upgrade of community edition to community edition.

Ended up doing an uninstall of 3.0.1 and fresh install of 4.0.0 due to the change in the package name from couchbase-server to couchbase-server-community not allowing a direct upgrade.