There is a new "function" in regards to isolating the bundle feature from the revenue recognition feature. But the feature itself is old and existing if you need to test it, As mention make sure you tick the box bundle on your bundle item and create a BOM for it.
It can simplify sales etc but it's not a kit as used in manufacturing etc for kitting of production.
There is also a retail function for retailkits, basically a simple assembly function to assemble different items to a package kit that is sold as a new inventory unit.
