There are features and improvements we started working on in 2020 which haven't been released yet, they are expected to be released in Q1 2021:
- Postchain synchronization system overhaul. We added possibility to sync blockchain from any node which has it (previously it was only possible to sync from current block producers) and increased robustness of sync subsystem. Expected to be released in January.
- begin_block/end_block hooks. This adds a possibility for a blockchain to automatically perform an action at beginning or end of any block. While this seems like a minor feature, lack of it creates huge issues for dapp developers, e.g. Maker CDPs