It depends on the user permissions on the client machine. But yes, for most users it will just prompt them to allow an ActiveX control and a subsequent popup to allow the new version.
However, notice I said *most* users. We've always had about a 90% success rate during upgrade, which is enough to slam us with 100 help desk tickets in the first week after upgrade. After going 7.0r1 to 7.1r6 this previous weekend, our current most common issue is clients upgrading and installing, but hanging at the "Loading components, please wait up to a few minutes depending on bandwidth" or whatever that message says. Clients with this issue can let it run indefinitely, it will never finish loading.
You'll have to let us know what your experiences are once you do the upgrade.
