In the old animation editor, I recall being able to copy a set of keys(an entire pose) and pasting at a different timeframe. I can’t seem to do that anymore in the new animation editor, I’m only able to select one key at a time. Is this feature still available?
Currently it isn’t.
However, it’s been mentioned in the announcement thread itself that it would be worth looking into.
We can assume it will return in the future!
If you are having a difficult time animating with the current editor, I highly suggest this plugin: