The rLink is the newest addition to the Scorpio family. Scorpio has been known for their high quality alarms for many years but with the rLink they took things to an entirely different level. The features are amazing.
I'll touch on a few main points. The rLink is a full functioning alarm that comes with a hands-free RFID arm/disarm feature (like the SR-i900). The system will arm and disarm the bike when you're close. There's no need to reach for the remote. With the rLink's iPhone App you can easily plan a solo or group ride with the rLink's mapping feature and then share your experiences on Facebook or Twitter. You can sync up with other rLink users for group rides as well. You can even access your top speed!
The iPhone app also let's you access the security information (shock, tilt, perimeter sensor, etc.) that you would normally access through a keychain device (think SR-i900). The rLink also has a built in GPS feature to locate your motorcycle if it has been stolen by providing information to the police.
Unlike the other Scorpio products, the rLink does not come with a siren and it must be purchased separately. An optional ignition disabler (sold separately) gets you an advanced ignition kill with anti-hijack features that will immobilize the ignition system to prevent "hot wiring". It even allows the user to remotely cut off the engine in case of a hijack attempt.
A full list of features can be found here.