I agree, I discovered some authors via Reddit and Kindle Unlimited whose books I loved. But keeping up with what they are releasing is a PitA. One only had a presence on twitter so I set up twitter to rss just for him, some others I check their websites once in a while and hope there's new info…
I wish goodreads would let me say "hey, notify me of every new release from this person, okay? No other mails, just release notifications of those I checked here." (maybe it's already possible? If so please tell me how :D)