Like the lower CPUs
Core i9-10900K has lost its proprietary unique packaging. Now it will be delivered in regular boxes.
Now, instead of a fairly original box with a beveled edge and a transparent insert, the flagship will be delivered in regular packaging, like its younger brothers. This will allow Intel to optimize logistics, as 1620 packs can fit on one pallet instead of the current 480 packs.
Of course, this will save money, and the appearance of the new generation flagship will shift the focus, so Intel will no longer need to somehow further promote the Core i9-10900K.