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Bernie

Anyone has up-to-date information on the scalability roadmap?

This is the official summary of the upcoming protocol upgrades, but it's too vague for me to understand whether the goals are realistic and how much research or implementation work is still missing to get there:
ethereum.org/en/upgrades/

ethereum.orgEthereum upgrades (formerly 'Eth2') | ethereum.orgAn overview of the Ethereum upgrades and the vision they hope to make a reality.

I mean, will the main chain really merge into the new Beacon chain with PoS in the second half of 2022?

Is sharding with ZK-Rollups being worked on? What are the remaining difficulties? Can we see a prototype running on a test chain now? If not, how soon?

Can we expect to be able to buy a pizza with ETH in 2023? If not, what's the next technical challenge?

And most importantly: how will all these improvements stack up against competing technologies such as and ?

I don't mean to bash . I'm actually genuinely curious. But I need more technical details to make up my mind on whether it has a sound plan to overcome the top limitations of blockchains:

1. Mining with PoW wastes crazy amounts of power

2. Every node verifying all transactions (and even executing contract calls!) won't scale beyond a few transactions per second globally

3. Transactions and contract calls reveal personal data: amount, sender, receiver, exact time final balance...