Cool. What does the update include?

– repeated crashes issue fix,
– Apple Pay Cash for peer-to-peer payments (US only),
– various lesser bug fixes.

The update was meant to be released later, but the recent repeated crashes issue that started on December 2nd sped up its release. If you have that issue but the update still is not available to you, try disabling notifications on your phone – it may, but does not have to, help.