The dbc work is separate to v5, so not integrated in any way. It’s research work that has been happening in parallel.
The main v5 updates that are/have been worked on are:
- Anti Entropy (AE).
- Eradicate data loss issues (at lease this is the aim, full public testnet will inform us whether we’ve missed anything).
- Reduction of unnecessary node and client messages on the Network (benefits of less code complexity, and performance improvements).
There’s been other tweaks, fixes and improvements along the way, but these are probably the headlines.
EDIT: I should also say that these are the areas that have been worked on by MaidSafe -
CLI2GUI mentioned in your post are both community projects, so all credit for them goes to @happybeing and @DeusNexus, respectively.