Although we were originally told that portable plots, plots that would allow for pooled farming, would be coming at the end of May it appears that there will be a delay into June according to developers on the Chia Keybase channel. The new plotting code should be available for testnet soon, but we will all have to wait a little longer it seems.

Check this space for powershell code in development that will assist small farmers with replacing their legacy plots with portable plots without too much manual intervention.