Most professional studios remain on v18.6 because it is "battle-tested." Version 19 is in beta, but v18 is stable, supports Blackmagic Cloud, and has no major security flaws. If you buy Studio v18 today, you get a free upgrade to v19 upon release (Blackmagic policy).
: Try the free version. The moment you wish you had faster rendering, automatic rotoscoping, or cleaner low-light footage – buy Studio. You won’t regret it. blackmagic design davinci resolve studio v18
Resolve Studio v18 is the best value in professional software. Most professional studios remain on v18