The BIP still needs to be tested, but once approved by consensus, the community can begin to activate it.
The activation will ultimately be decided by the nodes on the network.
We hope to see key aggregation in the wild soon!
So can we use key aggregation today?
A draft BIP was just submitted to the Bitcoin Core repository.
https://twitter.com/real_or_random/status/1640337134199640065
The BIP still needs to be tested, but once approved by consensus, the community can begin to activate it.
The activation will ultimately be decided by the nodes on the network.
We hope to see key aggregation in the wild soon!
