It still does. The upcoming Opera 12 will not have it. The author makes a reference to the fact that the widgets have not been receiving proper attention since they were launched and need dusting off.
My point is widgets are (and have been) basically dead, at least in terms of popularity. I'm not sure Facebook execs are aware of their existence, so it's probably unlikely they have a future. Just have to wait and see.
And Opera used to have a widget manager embedded in its browser, so it wouldn’t be too hard to dust it off and restart the project.