BitShares core recently gave some sneak-peak info about BitShares core 5.0 release, via the community Telegram. Rapid progression is occurring since consensus fixes happened earlier in July with 4.0 release.
Looking at the release notes for 5.0 there are AMM (Liquidity Pool), Removal of Liquid BTS from Voting (Only stake-lock), and many more… Therefore some professional additions to DeFi essentials are coming up within 2 weeks. You’ll find links to technical details below.
Gateways, API owners, Seed nodes and Witnesses will have to update the code before 30. September.