Unlike previous updates to Polkadot, JAM will not be launched by way of a gradual iterative strategy. The migration will occur suddenly and as soon as it is done, It can be carried out. ^ a b "polka", Oxford English Dictionary, On account of the popularity in the dance, polka https://andersonaazzz.hazeronwiki.com/7308769/polkadot_cookies_and_cream_fundamentals_explained