So am I right that this is just last year's...
So am I right that this is just last year's D3 repackaged and moved down the lineup to make room for the 3+?
They are a very similar beacon. The patroller has the added benefit of an analog search mode that the D3 did not have. This will allow you to pick up the beacon signal at greater distances and perform an analog search until you are within range for the digital search mode to kick in.