Proof-of-Stake (PoS) blockchains are rapidly advancing as a more eco-friendly and scalable option compared to Proof-of-Work (PoW) blockchains like Bitcoin. Let's delve into the technical progressions and potential hurdles facing PoS.

Technical Progressions in PoS:
- Staking Mechanisms: Various PoS blockchains utilize different staking methods, such as delegated PoS or nominated PoS, to ensure validator selection and network security.
- Sharding and Partitioning: These methods aim to tackle scalability issues by dividing the blockchain into smaller sections, facilitating faster transaction processing.
- Consensus Mechanisms Beyond BFT: Newer protocols like Proof-of-Authority (PoA) or Proof-of-Weight (PoW) are being explored to enhance efficiency and scalability while upholding security.

Potential Benefits of Advanced PoS:
- Sustainability: PoS blockchains consume significantly less energy, reducing their environmental footprint compared to PoW.
- Scalability: Progress in sharding and partitioning could enable PoS blockchains to handle higher transaction volumes.
- Security Enhancements: Evolving consensus mechanisms and validator selection processes aim to bolster network security while improving efficiency.

Challenges and Considerations:
- Centralization Risks: Certain PoS implementations with a limited number of validators may pose centralization risks, potentially undermining decentralization.
- Security Vulnerabilities: Novel PoS consensus mechanisms are still in development, and security vulnerabilities may emerge over time.
- Interoperability Issues: PoS blockchains with different protocols may face challenges in seamless communication and data exchange.

The Future of PoS Blockchains:
The future of PoS blockchains appears promising, with advancements in staking mechanisms, sharding techniques, and consensus algorithms poised to establish PoS as a dominant force in blockchain security. However, addressing centralization risks, ensuring long-term security, and fostering interoperability will be critical for widespread adoption.

Additional Considerations:
- Hybrid Blockchains: Some blockchains may explore integrating PoS with other consensus mechanisms to leverage their respective strengths.
- Regulation and Governance: Clear regulations and robust governance models will be essential as PoS blockchains evolve to ensure stability and responsible use.

By overcoming these challenges and fostering ongoing innovation, PoS blockchains have the potential to transform decentralized applications and shape the future of Web3.