I want a single service I can plug a bunch of creators and/or genres/interests into and get alerted about available new content. I don't care about book tours

I want a single service I can plug a bunch of creators and/or genres/interests into and get alerted about available new content. I don't care about book tours or interviews or someone leaving the band or twitter drama. Just tell me when one of my favorite authors releases a book for sale. Tell me when the album is out. Tell me when the game is on Steam. I don't care about your broken Kickstarter promises or your development updates or your Hugo Award nomination or that you've begun recording your new album.