EUTXO
EUTXO stands for 'extended UTXO', which will be a combination of the UTXO model (typically used in bitcoin) and the Account/Balance models (typically used in Ethereum), to potentially have “expressive smart contracts while keeping the semantic simplicity of the UTXO model". EUTXO was outlined by Cardano in January 2020.
eutxo
Cardano EUTXO Blockchain Upgrade Will Combine the Best Of Bitcoin and Ethereum
Cardano founder Charles Hoskins recently shared a file on his Twitter feed that outlined how the upcoming Goguen update will implement smart contracts using an extended UTXO purported to offer the best features of both the Ethereum and Bitcoin blockchain record keeping models.