Yes, here is a list of game development companies that support Nintendo Switch so far

505 Games • LEVEL-5 Inc.
• Activision Publishing, Inc. • Marvelous Inc.
• ARC SYSTEM WORKS Co., Ltd. • Maximum Games, LLC
• ATLUS CO., LTD. • Nippon Ichi Software, Inc.
• Audiokinetic Inc. • Parity Bit Inc.
• Autodesk, Inc. • PlatinumGames Inc.
• BANDAI NAMCO Entertainment Inc. • RAD Game Tools, Inc.
• Bethesda • RecoChoku Co., Ltd.
• CAPCOM CO., LTD. • SEGA Games Co., Ltd.
• Codemasters® • Silicon Studio Corporation
• CRI Middleware Co., Ltd. • Spike Chunsoft Co., Ltd.
• DeNA Co., Ltd. • SQUARE ENIX CO., LTD.
• Electronic Arts • Starbreeze Studios
• Epic Games Inc. • Take-Two Interactive Software, Inc.
• Firelight Technologies • Telltale Games
• FromSoftware, Inc. • THQ Nordic
• Frozenbyte • Tokyo RPG Factory Co., Ltd.
• GameTrust • TT Games
• GRASSHOPPER MANUFACTURE INC.
• UBISOFT
• Gungho Online Entertainment, Inc. • Ubitus Inc.
• HAMSTER Corporation • Unity Technologies, Inc.
• Havok • Warner Bros. Interactive Entertainment
• INTI CREATES CO., LTD. • Web Technology Corp
• KOEI TECMO GAMES CO., LTD.
• Konami Digital Entertainment Co., Ltd.

I'm very excited for Epic Games Inc supporting it, hopefully Unreal Engine is incorporated in this somehow