STRK will remain the native cryptocurrency for Starknet without any plans to introduce a replacement token under the proposed Layer 1 structure.

From the articleStarknet Voters Back Post-Quantum L1 ResearchAlso in Starknet's proposed Ethereum exit wins 93.52% support for further research, Starknet Voters Back Post-Quantum L1 Research, Starknet Moves Toward Post-Quantum Layer 1 as Voters Back Ethereum Split, Starknet Opens Layer 1 Research After 93.5% Poll Vote, Targets Quantum Safety by 2027 - Unchained, Starknet community overwhelmingly backs research into becoming an independent post-quantum Layer 1, Starknet Votes to Explore Going Solo as a Post-Quantum L1