yeah, "Wes" the moderator here quoted his insider at Mad Dog, saying it would be released in early June, which came and went. The 3500 is outdated, what makes you think they'll release something like this? They want you to buy the 3520 to get this feature, business is business, why would they release a "free" PI/PIF firmware when they can make money selling the 3520 for those who want the PI/PIF feature? Common Cents, isn't it? Right? The 3500 is out of production!
I'm still waiting for my Mad Dog $30 rebate that's over 100+ days since being mailed. They say, I'll be getting the rebate in 3 weeks, yeah sure.