All relevant PRs are merged in polkadot-sdk and the only steps left are proceeding with deploying the new pallets in fellowship/runtimes, assuming audit and testing in westend goes well. @ankan is leading the effort in all things related to this goal.
What I suggest is to keep this forum post as a tracking discussion about how the above steps goes. It would also help wallet developers to follow along and make sure integration work goes well.
Lastly, this is the public element room related to all things staking.