The new version of the Switch firmware version (Version 10.0.0) may not have given us the folders or themes, however Nintendo might have something far more amazing prepared. Dataminer Mike Heskin took a good look at the 10.0.0 firmware, discovering that it adds preliminary support for a new hardware model. 3 of the 5 new DRAM profiles are for this new hardware type and it seems like there is evidence that this new model will feature a secondary display.
Firmware 10.0.0 adds preliminary support for a new hardware model: "nx-abcd".
3 of the 5 new DRAM profiles are for this new hardware type and there's evidence of a secondary display of sorts being added exclusively on this model.
( ͡° ͜ʖ ͡°)— Mike Heskin (@hexkyz) April 14, 2020
Nintendo has yet to announce any new hardware model of its popular console. A secondary display would definitely be interesting, as it would make the Switch a worthy successor to the DS and 3DS consoles.