NecroFelipe: Pokémon Gen 10 will appear on both Switch and Switch 2

EDIT: I misinterpreted the facts. This is not a mere guess from NecroFelipe's part. This has been found by the community as a whole by looking at codenames in the GameFreak leak closely. The 10th generation of Pokémon (codenamed Gaia) is targeting a release on both platforms: Switch 1 and Switch 2 (Ounce).

EDIT 2: It has not been confirmed that Gen 10 will be developed on Unreal Engine. That rumor has no basis on the recent leak. The leak doesn't contain anything about Switch 2 either, nor any assets from the new Pokémon games beyond this info.

EDIT 3: Here's a post summarizing what was actually found in the leak (as of this post)

ORIGINAL POST: Recently, there's been light debate in the Pokémon community about the Pokémon Company's strategy for the transition to the Switch sucessor. Many have been cautioning that GameFreak typically likes to stick to Nintendo's older hardware as long as possible (as seen with Ultra Sun & Ultra Moon, Black 2 & White 2 for example).

Today, amid the GameFreak leak frenzy, leaker NecroFelipe has weighed in on the matter.

It is safe to assume Legends Z-A will do this as well. It may be a pattern for several Nintendo releases as they transition to the new system.