Unimpressed
From the 1st para of Oracle blog:
"On January 30, 2018, we released the Oracle Solaris 11.4 Open Beta. It has been a quite successful."
Spot the grammatical error staring at you like the proverbial dog's 'nads. I'd say that gives a pretty good indicator about how much Oracle 'cares'.
Further down:
"Some new features in this release are:
...
* ZFS Scheduled Scrub
..."
Bleeding edge stuff: a shell script and cron job.
From a FreeBSD 11.1 box's /etc/default/periodic.conf (which was probably committed years ago) :
daily_scrub_zfs_enable="NO"
daily_scrub_zfs_pools="" # empty string selects all pools
daily_scrub_zfs_default_threshold="35" # days between scrubs
#daily_scrub_zfs_${poolname}_threshold="35" # pool specific threshold
Also no mention of a Solaris 12 which kind of confirms it's zombie status.
Somebody mentioned Oracle's Solaris "team". I'm not entirely sure 'one old bloke with Alzheimers' constitutes a "team".