Compared with past updates to Polkadot, JAM will not be launched by means of a gradual iterative approach. The migration will come about suddenly and as soon as it is finished, It can be done. The prize designs to reward groups that successfully work on various implementations, one example is https://andersonwxxvu.evawiki.com/9066593/5_essential_elements_for_polkadot_cookies_and_cream