I looked ath the site, but also couldn't find any info about English subtitles. So probably the easiest way to find out is to call and ask. Same goes fot Tilt. 
I must say, I'm quite skeptical of that movie. They're still trying too hard to make a new film, while following the old guidebooks. In the trailer I could practically hear the commas in the script. And one was in the wrong place, even. But I'll give it a chance.
If you want to know how to swear, just say the word. While we can be very inventive in this area, most Bulgarians stick to the basics, which are rather easy. But slang - even I won't teach that perversion of language.:P