Yeah, if they are making a Black Adam movie, then the whole back story of Black Adam as a slave in Egypt 
and getting his powers from Egyptian gods will be addressed.
The wizard just channelizes those powers from various deities into BA / Shazam.
		
		
	 
		
		
	
	
Except he's not even from Egypt anymore, he was a slave and prisoner  from Kahndaq, which just leaves it more vague, and they can have more fun with implying the whimsical magic past, when not tied to a real  place. 
As does the cycle of elders at the Rock of Eternity, seems more expansive.  
I doubt  those specific retconed in Egyptian deities are going to play that  much into it, if mentioned at all.
	
		
	
	
		
		
			So Black Adam will be another Dwayne Johnson Egyptian movie? Interesting
		
		
	 
Well of late it's been the fictional country of Kahndaq a more vaguely Egyptian /Middle Eastern culture,  as per Johns and Frank's take (which the movie is somewhat based on).  Kahndaq was an original hub for the SHAZAM Magic. And yes where Teth Adam grew up, as a slave, then a prisoner.
I'm sure Dwayne Johnson's Scorpion King  had a huge effect in the PTB imagining him for Teth Adam, infact the fans were suggesting it, years before DC/WB announced it. 
	
		
	
	
		
		
			I have no idea what you guys are talking about but it sounds new and rich, hopefully all these play out in a franchise and make people fall in love with it
		
		
	 
The Egyptian names as deities hasn't really factored much,  they were neither in the original origin for Teth Adam, and they are not  being used in the modern retelling.
Either way there really isn't any big conflict, it doesn't really effect much, what maters is Teth Adam  was the previous champion and also said SHAZAM! to transform.
Which deities he channels to spell out the same name,  to the same effect  becomes pretty superfluous, either way.
	
		
	
	
		
		
			.... (from Wikipedia)
But Shazam wizard gave Black Adam his powers from a different source, that is  Egyptian gods.
S for the stamina of 
Shu
H for the swiftness of 
Heru
A for the strength of 
Amon
Z for the wisdom of 
Zehuti
A for the power of 
Aton
M  for the courage of 
Mehen
		 
		
	 
Not sure why it was brought up, earlier ^  by 
Micromind, except as a curiosity?
Or  he seems to think there is some sort of conflict, with the movie? 
He'll have to answer that. 
It is not used in the latest retelling, that the movie seems to be pulling from.  And was not part of Teth Adams original origin. 
It really dosn't mater either way, there is no real conflict with the movie, or retelling there.
Mary also at one once had her powers from different deities.