Bitcoin Core is debuting its 17th major software release which will improve the software's default wallet. Another update is the debut of a new "language", which adds important extra information to keys and allows users to name their different accounts. Another significant use case of the language is to make it easier to move keys from one wallet to another. Partially Signed Bitcoin Transactions ($BTC) - a binary transaction format which contains the information necessary for a signer to produce signatures for the transaction and holds the signatures for an input while the input does not have a complete set of signatures - is another highly-anticipated change.