Today Oracle has released the 18.104.22.168 Oracle Database. The Software is avaible for download from the OTN here. In the moment you can download the software for Linux 64Bit, Oracle Solaris 64Bit Sparc and x86-64.
The first read in the license information, Oracle Plugable Database is only avaible in Enterprise Edition as extra cost option. My hope was that there was a exception for the Standard Editon. For example to have only one PDB in one CDB (which can make upgrade szenarios easier).
Also check out the New Feature documentation here.
By the way here you can find a Installation sample.
So there is a new database version, and a lot of topics for new Blog post.