Instant transactions notification
With this feature Bytecoin transactions become real-time. When Alice broadcasts her newly created Bytecoin transaction to Bob, his wallet will immediately recognize it and update Bob's balance before the transaction is included in the blockchain. This is achieved through IWallet API interface that subscribes to all the transactions of the node it is connected to and instantly recognizes the transactions sent to you.
Also, am I right to say that the introduction of this new feature means that unlike other cryptocurrencies I would be able to pay for coffee and not to wait until my transaction is completed?
In Bitcoin there are payment services such as Bitpay that take care of your transaction and take extra risks to ensure it's fast. Also I'm not sure this what was originally mentioned by Ullo.