Thanks for your question! It's certainly an interesting one. If you look at new products being developed by large corporations and fast food chains, you'll see that the 3 trends are towards:
1. Health consciousness
Healthy eating has been an upward trend since the early 90's, when the free flow of information became more widespread and people became more and more educated about the health risks of excessive sugar intake. We realized that to live a longer and healthier life, it all starts with what we put into our bodies. To stay relevant, companies have had to alter their menus and products ( for example, McDonalds introduced salads, and Ben&Jerry developed Greek yoghurt). Fast forward to today, you'll see the plethora of documentaries on Netflix (like What the Health) perpetuating diet trends like Whole 30, Atkins, Keto, etc. It's actually inspiring to see food and beverage companies responding to this trend by coming out with responsible products that would help reduce obesity and diabetes. Oh, and Michelle Obama helped a lot with this too ;)
In terms of multiculturalism, I'm sure you've been seeing more exotic flavors being introduced into your grocery stores. With globalization came the mixing of cultures, and with increased access to air travel, our palettes have become more sophisticated. We want new foods; and then we want the opportunity to get those foods wherever we are. That's why Frito-Lay has a "Red Curry" flavored chip from their brand Off the Eaten Path, and why Wendy's has introduced a "Taco Salad". They're trying to reach certain demographics to remind them of home, or remind them of their travels.
The last trend that we're witnessing right now is that of sustainability. I'm not just talking about recycling and driving Teslas. With the help of documentaries and news articles, we've discovered that cattle ranching is responsible for 18% of greenhouse gasses, and the top reason for deforestation. So for "Save the Earth" people, switching to a plant-based diet is the single most effective thing you can do. With a growing number of companies like Beyond Burger and KiteHill, who use plants to imitate things like beef and cheese, it's getting increasingly easier to go vegan or vegetarian. You'll see that a lot of athletes are starting to do it, too. Did you know that even Tom Brady has gone vegan?