What's your hot tip for staying informed about emerging tech and industry trends?

Peer communities just like this one!

My methodology has changed over the years, a synopsis:

Early days of tech publications (90s) devour magazines and publications, typically 5+ fortnightly and monthly magazines
Mid days of web rise (2000s) combination of magazines, online publications, resources such as McKinsey, HBS, Gartner and Forrester, and conferences. Not just reading but also contributing. Experiments with new tech with startups and large IT vendors - they were willing to invest to unearth use cases and early adopters
Last decade or so has been predominantly online with newsletters, web portals, over and anove Gartner, Forrester etc., some newer content aggregators and providers. Find targeted newsletters (about 10 every day as an average), lesser conferences, more webinars. Social media sites like LinkedIn and at least in this part of the world WhatsApp groups of IT leaders for quick response.

In essence, invest 1-2 hours every day on your learning; the theme is a personal choice, IT, deep tech, business IT, whatever. 

A few ways I would suggest: Reading from news sources (setup alerts and triggers for topics of interest), join industry associations and online communities and get involved, stay on top of reports and research papers, follow thought leaders and influencers in the field you are interested in (Gartner Peer Community, twitter, linkedin etc.) and finally the cost of technology experimentation is virtually nothing so play around with new tools, platforms etc.

In today's rapidly changing world, where technology, industries, and societal norms are constantly evolving, the ability to learn and adapt is becoming increasingly important.

Nothing like reading online and of course doing. In addition to what Didier says, I would add:  take regular training on new cloud technologies. Pick a cloud provider (AWS, Azure, etc.) and stay up to date on new services and technologies they are releasing. 

I recommend regularly reading technology and industry publications, following thought leaders on social media like linkedIn, Gartner, and attending professional events such as conferences or trade shows. It's also important to stay curious and keep learning new skills to stay relevant in an ever-changing world so i'm a eternal student!