I have several digital camera bodies and lenses that have updatable firmwares. I don't know how people keep track of firmware updates. I'd be lucky if I accidentally learned of a firmware update that is already an year old. For example, I have a Metz flashgun for micro four thirds that never seemed to have the correct zoom level for the focal length. I had given up on it. But I recently found out that there was a firmware update - yes, more than an year old - to fix that issue. (Not that all firmware updates are for the better, but at least you can choose when you know there is an update.)
For computer software, it's become so easy with the internet connection. The important ones that I use notify me of update/upgrades. (LightRoom being a prime example.) I kind of thought update notices nuisance, but now I see their value.
I wish there was a service that notifies me of firmware update of all the photography gear I have, across brands. (Or is there something like that already?)