It will reduce the size of Nintendo Switch boxes, and there is a logistical reason behind this decision.
The Japanese company plans to reduce the console’s packaging by up to 20% to facilitate distribution.

Reasonable explanations behind these movements are rarely shared, although it is common practice as each generation progresses. We’re talking about Nintendo’s decision to reduce the size of Nintendo Switch boxes by up to 20% to promote distribution and therefore sell more consoles.
This is the knowledge shared by Nikkei that they have expanded by interpreting that their ultimate ideal is to increase the amount of supply to the world by increasing shipping efficiency, we understand this by facilitating better product stacking. It is unknown whether this measure will reach the West, but starts in august in japan.
Nintendo optimistic about console distribution for Christmas campaignExtending this curiosity from Vooks, highlighting that the Nintendo Switch packaging (the OLED model) is already 14% smaller compared to the original Nintendo Switch, the success of the Nintendo team in continuing to reduce space is great. Unfortunately, there is currently no image of the new box.
Earlier in the month, we learned that Nintendo Switch production has slowed in recent months due to delays in acquiring components such as semiconductors. The Japanese company was quite optimistic about its Christmas campaignso such decisions do more than reinforce the idea of a very positive sales quarter for Big N.
In addition, there are several special releases scheduled to premiere in the coming months, starting with Pokémon Scarlet and Pokémon Purple for Switch, but followed by other highly anticipated comebacks like Bayonetta 3.
Source: 3D Juegos