Future US shale productivity can still rise at a 5% CAGR to 2025, based on evaluating 300 technical papers from 2020. The latest improvements are discussed in this 12-page note, and may spark more productivity gains than any prior year. Thus unconventionals could grow by 2.6Mbpd per annum from 2022-25 to quench deeply under-supplied oil markets. But hurdles remain. The leading technologies are also becoming concentrated in the hands of fewer operators and an emerging group of oil services.