a",{eras:[{since:"2019-05-01",offset:1,name:"\u4ee4\u548c",narrow:"\u32ff",abbr:"R"},{since:"1989-01-08",until:"2019-04-30",offset:1,name:"\u5e73\u6210",narrow:"\u337b",abbr:"H"},{since:"1926-12-25",until:"1989-01-07",offset:1,name:"\u662d\u548c",narrow:"\u337c",abbr:"S"},{since:"1912-07-30",until:"1926-12-24",offset:1,name:"\u5927\u6b63",narrow:"\u337d",abbr:"T"},{since:"1873-01-01",until:"1912-07-29",offset:6,name:"\u660e\u6cbb",narrow:"\u337e",abbr:"M"},{since:"0001-01-01",until:"1873-12-31",...

- 'Priority and Fairness has introduced a new feature called _borrowing_ that allows an API priority level
  to borrow a number of seats from other priority level(s). As a cluster operator, you can enable borrowing
  for a certain priority level configuration object via the two newly introduced fields `lendablePercent`, and

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* Added the `kubeadm upgrade diff` command to show how static pod manifests will be changed by an upgrade. This command shows the changes that will be made to the static pod manifests before applying them. This is a narrower case than kubeadm upgrade apply --dry-run, which specifically focuses on the static pod manifests. ([#63930](https://github.com/kubernetes/kubernetes/pull/63930), [@liztio](https://github.com/liztio))