When "Westworld" brings itself back online, the "intriguing" second season will have more worlds to explore.

Season 2 is now filming for a planned spring 2018 premiere on HBO. A recent casting pretty much confirmed the arrival of Samurai World -- or whatever they decide "SW" stood for from the Season 1 finale. And now "Westworld" TV creators Jonathan Nolan and Lisa Joy just hinted at the possible arrival of two more worlds: Roman World and Medieval World.

The 1973 movie "Westworld," written and directed by Michael Crichton, featured the Roman and Medieval parks.

At the start of a panel discussion during the 2017 Vanity Fair Summit, Nolan and Joy were asked why those worlds weren't teased in Season 1. Here's Nolan's response, via Deadline:

"We had to save something for Season 2."

Is that confirmation, or was he just being flippant? Deadline was there, and reported it as a new parks hint, so we'll just have to wait and see how that pans out.

Meanwhile, Collider just talked to "Westworld" star Ed Harris (Man in Black/William), who had a lot to say about the crazy filming schedule of both Season 1 and Season 2. In terms of the Season 2 storyline, he told Collider, "So far it's definitely intriguing. I don't understand all that's going on, but I know what I'm doing." Best you can hope for, especially when he said they've been filming with multiple units working on multiple episodes at the same time. "I'm glad that I am not a person who's trying to schedule the days of filming on this thing, because it's insane."

HBO has ordered 10 episodes for "Westworld" Season 2, and they're expected in spring 2018.

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