The current documentation for the latest version of sync gateway says that Couchbase Server 2.5.2 is the latest supported server to work with sync gateway:
“You can connect Sync Gateway to Couchbase Server 2.0 or later.
Only Sync Gateway instances connected to Couchbase Server versions 2.2.0 to 2.5.2 inclusive, are officially supported.”
Is this a typo or is sync gateway being deprecated or phased out?