Do you trust this guy? I don't mean to sound abrasive, but I'm always thinking alterior motive. He can tell you one reason why he's building his own, but maybe just to pump some money out of a "sucker." (And I'm not calling you a sucker! I bet you're a very nice guy!)
The thing is, he would not have this info before people who have contracts with Rem, like the NYPD. Which is why I called my buddy. I also cannot imagine that Remington would take their line of rifles and degrade them into sub savage pieces o shiot. I can imagine them bringing another line of pinned (or whatever) type guns forward, but maybe we're just talking about another introduction, rather than the scrapping of their whole product line.
Sorry, (not really sorry), but based one what I found out, Rem does not have plans to throw away all threaded receivers in favor of the inferior 710. Its just ain't true!