Looks like they did and replaced them with Bosh. I have never seen plugs with tips like these.
Iridium plugs are advertised to last ~200,000 miles
Those are Iridium plugs. I seem to recall that they are "not suggested" for the TJ's as they do not seem to perform well with the ignition.
You are thinking of the single platinum plugs. I've been running the Autolite iridiums for ~50,000 miles and they run great.