teahousemoon If you've signed up to construct.net, then you can go into your profile and edit your subscriptions.
Here you can choose whether you want to receive news, release, promotional or tips emails!
We do send out an email with every C3 release, so if you sign up, you'll be told about them! If you have signed up and don't get them, make sure you check your spam - if they've wound up in there then we might need to have a look at them!
(Also, C3 is still in beta by the way.)