Considering Aruajo won the "Best Original Score for a Video Game or Interactive Media" award for Lords of Shadow, I doubt they'll be changing the music style.
Out of curiosity, have any other Castlevania soundtracks won awards, or even been nominated for them?
What award from what venue? That Film Music Critics Award?
If we're putting quantitative values on the soundtracks of the Castlevania games and how many "honors" that they are received, then I could probably point to all the major video game websites, blogs and magazines from the past 15-20 years and find "Top Lists" and "Best Soundtracks" where past Castlevania music is ranked high if not top-tier against some of the best gaming music of all time.
How exactly that stacks up to a single award given by a
film critics association is all a matter of each individual person's opinion.