Are the following plugins (attachment, geoip, user-agent) for ingest node already been shipped with ES 5.4.0 ? If not, what is the expected ES 5.5.0 release date ?
The Installation Section in  says:
Installation Version 5.5.0 of the Elastic Stack has not yet been released.
On the contrary, ES 5.4.0 changeLog has reference to Ingest Attachment.
Plugin Ingest Attachment Remove support for Visio and potm files #23214 (issues: #22077, #22079, #22963)