One more tantalising sign that the current Brahmos block is at the 450 km ER version mach 3.5 stage and just like drdo showed the LR version which is 800km and mach 5 is being worked on. Perhaps this is why PJ-10 is so busy as of now and like habit they are going mk1 mk2 style wrt the core missile propulsion and enabling tech (seeker, control guidance algo, electronics, thermal battery, on board cooling etc) wise.
NG version/ALARM-N is mainly export oriented hence excused.
Pic from recent presentation
View attachment 40695
There are two extended range versions. One is 450 km at mach 3.2. The other increases speed to mach 4.5, and the increased speed adds another 50 km to the 450 km version.
LR apparently remains at mach 3.2.
There's another version with 1500 km range.