Emerging from burnout. Are there new web architecture paradigms in the past few years?

I have been a developer for 25 years, last decade at a web and software agency focusing mostly on SaaS based applications, architecture and development. The last two years I have experienced burnout and despite performing well at work have found myself disinterested in keeping up with emerging architectures.

We find ourselves falling back on the tried-and-true MVC architecture for most of our application development and it just works, its stable, its great for new hires, and has great frameworks and open source options. But I am challenging myself to explore whats new in the industry this year and break off the disinterest and continue to be a guiding developer for the younger generation in my field.

Are there any new architectural paradigms that have emerged in the last few years I could start looking into and exploring? Hopefully things that have an inkling of staying-power and not a flavor of the month?

Honestly, this is my first attempt and emerging from my disinterest and I think this subreddit may be a good place to start.

Thanks!