Ripple's unit Xpring tweeted today that the XRP Ledger 1.4.0 version is now available on the mainnet and will introduce a "removable account" feature. This update will allow users to delete old XRP accounts and restore some basic reserves. If the proposal is supported by a majority of XRP Ledger validators, it will be implemented. Voting is currently underway and 23 validators have voted for the proposal. If more than 26 validators vote for the new feature, the update will take effect on XRP Ledger by the end of this month.