RiffWorks Line 6 Edition includes the same main features as RiffWorks Standard, the same 8 free drummers, and the same 60 day free trial of RiffLink. The difference between the two versions is RiffWorks Line 6 Edition works seamlessly with compatible Line 6 devices ONLY (GuitarPort, PodXT, PodXT Live, PodXT Pro, and now TonePort UX1 and UX2), while RiffWorks Standard works with all ASIO and Core Audio devices (including the Line 6 devices listed above and all the devices in our recommended hardware list:
http://www.sonomawireworks.com/guide/index.php/Recommended_HardwareRiffWorks Line 6 Edition does not include IK Multimedia's AmpliTube LE plug-in.
All RiffWorks Version 1 owners are eligible for the crossgrade, so yes you are eligible.
Simply follow these easy steps to get your coupon code for $70 off RiffWorks Standard:
http://www.sonomawireworks.com/guide/index.php/How_do_I_crossgrade_from_RiffWorks_%28v1%29_to_RiffWorks_Standard%3F