This is great to hear - sounds like the performance should be in the same range as the R30.Latest is now mid May, at least in Europe.
The IC-R15 does not disappoint, great Icom quality and performance, it blows my Uniden BCT15X and Icom A25C out of the water as far as VHF air which I monitor. It picks up CLE tower & ground control which the other two struggle with, all this with the Signal sticks dual bander.
Wonder if Icom has a desktop scanner with similar VHF air specs as the IC-R15.
Any chance you could do the same sort of side-by-side with some of the NOAA frequencies in the 162 MHz band? Us rail enthusiasts (which Icom also explicitly mentions along with air enthusiasts in R15 advertising materials) are curious about how it performs in that part of the VHF spectrum. Should be able to find a distant NOAA station to compare.