Bitcoin ABC version 0.19.11 is now available from:
https://download.bitcoinabc.org/0.19.11/
This release includes the following features and fixes:
Previously, wallets could only be loaded at startup, by specifying -wallet parameters on the command line or in the bitcoin.conf file. It is now possible to load wallets dynamically at runtime by calling the loadwallet RPC.
The wallet can be specified as file/directory basename (which must be located in the walletdir directory), or as an absolute path to a file/directory.
This feature is currently only available through the RPC interface. Wallets loaded in this way will not display in the bitcoin-qt GUI.