As long as your support license are active, you can download all updates from your purchase history.
Most of the items now have in-admin update support. If you enter your support license keys on the Connections : Settings under the Licenses tab you’ll be notified right in the WP admin when there is an update and you will be able to apply that update with a single click right in your WP admin.
As for the update to the Widget Pack, that is still being worked on and has not yet been released. When it is, you’ll have to download it from your purchase history as 2.0 will be the first version to include the in admin update support.
Hope that helps!