The Apollo Server team has made significant improvements in Apollo Server 4, focusing on simplifying integrations and improving type safety. The `dataSources` API has been revamped to improve context correctness, and pagination is now handled through a common approach using cursor-based or offset-based methods. Apollo Server supports both federated and monograph architectures, with the latter being more suitable for smaller services or microservices architecture. Subscriptions are supported in Apollo Server 4, but require careful management due to real-time data complexities. Trevor Scheer, an engineer on the project, will be attending GraphQL Summit in San Diego, where he'll be participating in the Apollo Garage. The team is open to feedback and can be reached through GitHub or Discord.