Slashdot, hacker news feeds and some communities here. I dont really try to keep up with commercial tech since most of it is bundled with DRM or spyware with exceptions such as the steamdeck.
I’m only interested FOSS stuff myself. I subscribe to some security and privacy communities here in addition to some technology ones. If the news is big enough we’ll hear about it one way or another.
Discoverability happens organically out of need. Eg search “split pdfs linux” and I’ll get a cli tool for it.