As we have been reporting for days now, Russia has begun withdrawal of its fixed-wing aircraft from Syria.
Reuters has posted this video, released by the Russian Ministry of Defense, showing many Russian aircraft taking off from the Hmeimin air base, perhaps for good.
There is no indication that we can find of an Mi-28 having been documented as being present at this air base before this video.
Interestingly, shrewd observation of yet another video released by the Russian Ministry of Defense indicates a second new attack helicopter present at the base:
Both the Mi-28 and the KA-52 are potent attack helicopters that excel at close-air support, and the latter is a late 1990s model, making it one of the more up-to-date helicopters present in the Russian arsenal.
The presence of these helicopters suggests that while Russia may be drawing down its long-range strike capability, it will certainly not be leaving Lattakia province defenseless.
— James Miller