Earlier in July, the author revealed that House of the Dragon season two wasn’t affected by the Writer’s Guild Association (WGA) strike. Martin isn’t serving as a writer on the series, but he’s an insider nonetheless.
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Here is a statement from Martin about the season 2 project:
“One of the few shows still shooting is House of the Dragon, as you may have read. That’s true. I am told the second season is half done. ALL of the scripts had been finished months before the WGA strike began. No writing has been done since, to the best of my knowledge. HOTD is shot mostly in London (and a little bit in Wales, Spain and various other locations), which is why filming has continued. The actors are members of the British union, Equity, not SAG-AFTRA, and though Equity strongly supports their American cousins (they have a big rally planned to show that support), British law forbids them from staging a sympathy strike.”
The author also hinted on the series getting a third season. On his website, when responding to the news of the series getting eight Emmy nominations, Martin wrote, "I would have loved to see some of our writers, directors, and actors on the final ballot as well. You don’t get to contend for Best Dramatic Series unless you have some great actors, directors, and writers working of you. Most of our team will have other shots at the prize in seasons to come."
The author also added, "Keep watching. The best is yet to come."