# Ethereum Protocol Fellowship - The Third Cohort (Update 4) This is the fourth update for Ethereum Protocol Fellowship - The Third Cohort. The final architecture was defined in the previous weeks, mentors were confirmed, and development was officially kicked off. - Description: https://github.com/eth-protocol-fellows/cohort-three/blob/master/projects/4337-bundler-rust.md - Architecture and specification: https://hackmd.io/@Vid201/aa-bundler-rust - GitHub repository: https://github.com/Vid201/aa-bundler/ ## Updates List of updates: 1. Joav and Dror were confirmed as mentors. Thanks, guys! :) 2. Create [issues](https://github.com/Vid201/aa-bundler/issues) for the development to split tasks for the development. 3. Implemented wallet/account for bundler (https://github.com/Vid201/aa-bundler/pull/16). 4. Started working on in-memory user operation pool (https://github.com/Vid201/aa-bundler/pull/19). 5. Reviewed Will's pull request for ABI generation for EIP-4337 smart contracts (types) (https://github.com/Vid201/aa-bundler/pull/17). ## Next steps In the following office hours, I will present the project proposal and hopefully receive some additional feedback, which is always more than welcome. I will continue bundler development, focusing on the first version of the user operation pool in the next week or two. My plan is also to start joining AllCoreDevs meetings, which are biweekly on Thursdays, with the next being on 8th December. I also continued deep diving into other Ethereum areas that interest me, such as p2p stack and others.