The scaleform files for the “killcam” appeared in last week’s 6.73 patch and were updated in the 19/01 patch, they can now be enabled ingame using the commands:
dota_killcam_show 1
dota_sf_hud_killcam 1
As you can see from the screenshots they’re more along the lines of an kill info box than “cam”, the abilities can be hovered over to read their description and any damage taken from other sources (ie towers) will also show up.

