Is there a good newsletter for summaries of the bigger technology upgrades to the Ethereum ecosystem? I can’t really keep up with the play-by-play. I’d like a monthly top-5 links. 

Right now I mostly just find out about things via random casts and back channel chatter. Like I just learned about based rollups.

I usually just check coindesk.com for any general happenings, although I imagine you're looking for something more in-depth

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UX Designer for DAOs | Pixel Artist | Cypherpunk | https://linktr.ee/Alditrus

Not interested in following the market really

Only infrastructure evolution