Gavin Wood has published a proposal for the future of Polkadot in the gray paper

According to ChainCatcher news, Polkadot founder Gavin Wood tweeted that the "Initial Jam Specification: Proposal for the Future of Polkadot" has been released in the gray paper.

Jam's full name is Join-Accumulate Machine. It is a semi-consistent scalable trustless virtual machine that combines the protocols of Polkadot and Ethereum elements to provide a global single-piece permissionless object environment similar to the Ethereum smart contract environment, and is paired with Parallel secure sideband computing on a scalable node network, the overall model of services provided is mainly driven by Polkadot's underlying architecture.

Jam allows anyone to deploy code on it as a service and charges fees based on the resources the code uses, or will launch a Polkadot-compatible CoreChains service.