I replaced my 2016 FJR with a 2020 BMW R1250R (not RT) last Spring (see my posts on the Want to Go Lighter thread), so can address this, as I have basically the same TFT as the one shown. My engine is essentially the same as well, though is tuned a bit differently, with 136hp and 105 ft. lbs torque (and is just 525 lbs. wet) which the Shift-Cam maintains thoughout the lion's share of the rev range, either by RPM (switches at 5000'ish) or throttle load (variable).
The TFT's red line does start out at 5500 when the bike is turned on and the engine is cold, but moves up the RPM range as it warms up. Within ten minutes or so, that red line will be significantly higher...mine redlines at 9000rpm on a 10,000 rpm scale, and I presume that's probably standard across the 1250 line.
I can't speak to the RT model specifically, but if anyone has any questions about the new 1250 Shift-Cam engine in general (or the R in particular), I'd be glad to address them. Short answer: It's the best bike I've ever ridden.
Oh, and that beautiful 2020 RS that was pictured earlier in this thread? That was the bike I was initially looking at, until I went to the dealer and did a couple test rides on both the RS and the R, and found the ergonomics of the RS far too aggressive -- something like 17 degrees vs 7 degrees of the R -- and the slightly longer geometry of the bike's rake/trail too heavy in corners. The R, on the other hand, fit like a glove and was incredibly nimble (and has the brackets for hard panniers, if desired). The RS is not just a R with a fairing, the ergos and handing are notably different and, for me, much less impressive.
A couple pictures of mine in Pollux Metallic Matte:
http://instagr.am/p/CFx_itIgNOm%2F/
http://instagr.am/p/CDm53pjA45M%2F/