First of all, fantastic ideas!
We've been throwing around the idea of a mobile app for a little while now, the only problem being that there is a distinct lack of mobile coding experience in our team!
Newsletters are also an idea we've had there-or-there-abouts for a bit - it's an idea I'd personally love to integrate
In the meantime, if you would like the latest notifications from us about news you could join our Discord server (https://discord.gg/eHQv8Nk) and enable notifications on the "#news" channel. It's a bit of a half-solution, but the good news is we should have Browser notifications working soonish!