Download the update here or in your wallet with the upgrader on Windows.

Here is the changelog for this release:

[3.6.3.0] 2017-10-09

Fixed

Fix problems sending beacons, #684 (@tomasbrod).

Fix clients getting stuck at V8 blocks when syncing, #686 (@tomasbrod).

This leisure update fixes a critical issue with sending beacons and should help prevent users syncing from 0 getting "stuck" at block 1010002. Thanks to all our devs for this release, especially @tomasbrod, @ravonn, and Rob.