Already seeing a bunch of lazy bullposting on Twitter. 

What Robinhood is actually launching (based on their blog post):

EU
* US stock & ETF tokens — 200+ assets, 24/5 trading, zero Robinhood commission; live today for eligible users; issued on Arbitrum.
* App expansion — Robinhood Crypto now available in all EU
* Crypto perpetual futures — Up to 3× leverage, orders via Bitstamp; full rollout by end of summer 2025.
* Robinhood Layer 2 blockchain — Arbitrum-based chain for tokenized real-world assets, 24/7 trading, self-custody; in development, date to be announced.

United States
* Crypto staking — ETH and SOL rolling out now to eligible U.S. customers.
* No U.S. launch dates yet for stock tokens, perpetual futures, or the Layer 2 chain.

https://newsroom.aboutrobinhood.com/robinhood-launches-stock-tokens-reveals-layer-2-blockchain-and-expands-crypto-suite-in-eu-and-us-with-perpetual-futures-and-staking/

Stock coins (i.e. tokenized stocks) and perpetual futures in the US is the most valuable prize.

The key is to offer American stocks to those who can’t buy them. Keep the machine pumping!