Bricks by Mike Newsletter
Generally, I post updates most frequently on my Instagram (and by extension, Facebook) stories.
That being said, if social media isn't your thing, I've also started a monthly (or sometimes bi-monthly) email newsletter for updates regarding upcoming kits, re-stocks or other fun projects and behind-the-scenes things.
You can register yourself for the email newsletter here.
(Note: I'll never send you spam or share your details with anyone else, and you can contact me to have yourself removed at any time).