IOG have just released a tracker for Leios development, which will enable a significant jump in transaction throughput for Cardano. Tests against the design specifications suggest that it will be able to achieve close to 1000 tps, without sacrificing decentralisation or security. Which is pretty much solving the blockchain trilemma.
We will keep an eye on development progress and share details as they emerge.
You read more on the CIP and protocol specifications at https://leios.cardano-scaling.org.