Not a paid update anyway. The Analyze portion of the firmware is still due to be added in a future firmware release. It was listed already as a feature. Something that was included in the paid HP-1 Extreme feature set.
From the Radioreference 536 wiki: "Analysis Modes include Band Scope, RF Power Plot, Trunked System Analysis, and EDACS/LTR LCN Finder."
Hopefully sooner, than later. I've got plans for this feature.
Uniden already has all the source code for all the extreme features, it's just taking them time to reformat it to work on the 436/536 LCD screens. So the hard part is done, thankfully. I'd expect the update sooner than later.