Just added to the blog article the following paragraph:
UPDATE: The HomePatrol-1 Extreme Upgrade will be available for only $99.99 from Uniden.com. But, we want to take care of those of you who have already bought the HomePatrol-1. We will soon add a link to prepurchase the upgrade for only $49.99. In order to prepurchase, you will need to provide us with the electronic serial number of your HomePatrol-1 so that we can provide you with a registration key that is specific to your HomePatrol-1. Having that in hand, you’ll be ready to activate the Extreme features as soon as we release the update. Once we release the update, the price will go to the normal $99.99 price.