Mumbai, June 5 -- The race to dominate the Bollywood box office over the next few years is already underway. With several big-budget films, franchise installments, and ambitious collaborations in various stages of production, some of Hindi cinema's biggest stars have their calendars packed like never before. In fact, actors like Sunny Deol, Akshay Kumar, Ajay Devgn, Salman Khan, Kartik Aaryan and Ranbir Kapoor currently rank among the busiest stars in the industry, with multiple projects lined up across genres and production stages. From mythological epics and action spectacles to romcoms and ambitious originals, each of these actors is juggling an impressive slate that could define the future of mainstream Hindi cinema while reinforcing ...