Game of Thrones has finally announced its first major cast addition for Season 7. And it's someone that comes from the world of Harry Potter! Earlier this month, a casting call surfaced for Game of Thrones Season 7, and it gave us a hint at some of the new charaters being introduced. Now, we have word that Oscar-winning actor Jim Broadbent has become the first casting addition for this highly-anticipated season. Is he playing one of these new characters?

Entertainment Weekly broke the news, although no character details were revealed for Jim Broadbent. The site's sources reveal that he does play a "significant" role, but they would not clarify whether or not the actor is playing one of the characters revealed in the casting call. There were nine new characters revealed for Game of Thrones Season 7, but only one fits the age range for the 67-year-old actor.

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The character in question is an unnamed priest, who is in his 60s and said to have a "moral authority and gravitas." The show is seeing a white actor who uses the British RP (Received Pronunciation) accent, and has a "characterful face." While Jim Broadbent certainly does fit the bill for this character, it is also said that whoever lands this Priest role will only be used for one week of filming starting September 22nd. Since this report claims that he has a "significant" role, he will most likely be sticking around for longer than one week, and we may see quite a lot of this character when the show returns for its Summer 2017 premiere.

This report also claims that casting calls like the one that leaked this month are often "deliberately deceptive" since they often leak online. Production will take place in Northern Ireland, Spain and Iceland, with the Comic-Con trailer teasing that the show has started production. While the show typically debuts in either April or late March, Season 7 will arrive sometime in the summer of 2017, but an exact date hasn't been revealed quite yet.

Game of Thrones Season 7 will span seven episodes, with the eighth and final season set to span six episodes. The HBO series has already confirmed their new directors for Season 7, with series veterans Alan Taylor, Jeremy Podeswa and Mark Mylod returning, along with series newcomer Matt Shakman. Jim Broadbent most recently starred on the big screen in The Legend of Tarzan, and he will next be seen in Bridget Jones' Baby.