Is Uniswap only for ERC-20?

So, I've been hearing a lot about Uniswap and its role in the decentralized finance world. But one thing that's been lingering in my mind is, is Uniswap exclusively designed for ERC-20 tokens? I understand that Uniswap is built on the Ethereum blockchain and ERC-20 tokens are inherently compatible with it, but are there any limitations or plans to expand Uniswap's capabilities to support other token standards or blockchains? I'm curious to know if Uniswap's focus is strictly on ERC-20 or if there's potential for broader integration in the future.