In the three weeks following 12/12 flip, my plants grew 3x. And it was from stretching between the nodes on the main stems, not the addition of new nodes. So the top flowering area that I saw when I switched is also now the top cola. However, there was some new growth on the lateral branches, and there are additional small bud sites there.
Four weeks following the flip, and I don't see any new bud regions, just bigger buds.
And the stems are getting thicker to support what I hope will be large, weighty colas!