I've been following Elrond's progress for a few months now, with great interest. Some key core features: - Their blockchain application itself id written in Go
- the Smart Contracts VM can run any language that compiles to WASM
- They have an extensive Smart Contracts Rust framework
- Elrond Standard Digital Token is also live on their Testnet and will also be launched in a few weeks, an equivalent to Etereum's ERC-20
- Also, their mainnet is capable at 16k TPS in current config, but it can scale to at least 263k TPS (figure from their pre-launch public scaling tests) which is waaay more than any other blockchain can do, including estimated throughput figures for ETH2
The two most recent features they plan to introduce in the next few weeks are SC formal verifications as well as meta-transactions:
https://elrond.com/blog/technical/
However, I find most interesting about Elrond is they are planning to launch Maiar on the 31st Jan, a non-custodial wallet to make interraction with cryotos easy for the common folk and enable the onboarding of many millions new users.