According to Odaily Planet Daily, Vitalik said in a reply to netizens on the X platform that the focus of Plasma is not to prevent invalid/unavailable state conversions, but to allow users with valuable assets to use the previous (valid and available) state to exit when this happens, in a way with self-consistent rules to prevent double exits of any assets. Last November, Vitalik published his latest article, in which he proposed to use new technologies to transform Plasma. V God said in the article that Plasma has undergone many iterations since it was first proposed in 2017, and is now facing new developments.
This technology allows all data and computations (except deposits, withdrawals, and Merkle roots) to remain off-chain, greatly improving scalability. However, due to the high cost of client data storage and the inability to be generally applicable to applications other than payment, Plasma has gradually been replaced by rollups technology. Now, the emergence of validity proofs (such as ZK-SNARKs) has allowed Plasma technology to be reconsidered, especially in the field of payment.
This new Plasma chain will run the EVM, and although the security guarantees will not cover all users, in practice it can still ensure the security of most assets. In addition, there are also challenges in extending Plasma technology to the field of fungible tokens, such as handling complex EVM applications.