Does it make sense to you the 48 Su-35S units that were claimed to be on order? The price seemed low, maybe it is 36 units for three squadrons, two in Belbek and one more for Khotilovo? The pictures that we got to see at the MoD visit to KnAAZ were not very clear to know how many units would be delivered in the coming years. But they already said they were moving towards bigger contracts to improve pricing.
There are 6 Su-35 remainng of the current contract
Also, in the screen of KnAAZ you can see "new contract" with 3 for 2021 and 3 for 2022.

This could be an intermediate contract, probably signed a year or more ago to complete another squadron, being intermediate between contract for 50 of 2016 and the new one of 70 billion rubles that will be signed before the year ends.
This is nothing new, in the case of Yak-130 , have been received aditional machines this year, before the new contract for 25 , probably under other aditional intermediate contract
In the case of Mi-28N or Mi-35M , also small ammounts of machines habe been delivered under aditional small contracts
About the contract of 70 billion rubles, probably is for not more of 30, for Belbek and other places as Lipetsk , or for complete 23 IAP that send airplanes to Akhtubinsk and Zhukovsky
The second squadorn of Khotilovo will be later, probablly togheter with the order for Kaliningrad
So the Sukhois will remain there as the 22nd IAP and the MiGs will form a new regiment at Chuguyevka?
Yes, in the net was said MiG-31 is already working in Chuguyevka.
Tsentralnaya will be its repair facility and the HQ of a new division
Maybe the 611th IAP at Dorokhovo will be reopen? The Sukhois at Khotilovo came from there right?
Any idea where they will be stationed, in the Western MD?
Maybe or maybe not.
Is very probably the Su-35 will go near the west border, for example to Andreapol , near Latvia and Belarus borders, that is also empty since 2009 (ex-28º IAP)
Dorokhovo airfield , in Bezhetsk, could be the homebase for the Su-57 regiment of West MD.
Also Lodeynoye Pole, (ex-177 IAP) or Siversky (old base of Su-24), both in Leningrad region, could be other possible locations for Su-57 in the West MD
In any case, it does seem that the numbers of fighter squadrons / operational air bases are indeed increasing, beyond the substitution of older airframes, isn't it?
Yes, in my opinion at the end will go 10 to 12 air defence figter regiments (from 7 Su-35 + 3 Su-57, up to 8+4)
This is a similar number that the number of regiments of Su-27 that Russia got from Soviet Union
10 years ago only remain 4 regiments and other 2 squadrons, in total only 14 squadrons of Su-27
They were expected to create complete air groups for the different fleets, that may cause them to keep buying Flankers for a good while...
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Yes, the aviation of the Navy goes for long, it was dismantled more than 10 years ago and creating new regiments from zero takes 7 or 8 years. The Su-35 will continue to be bought until 2030 or something more
The reasonable thing is to first open a regiment with Su-27, like Kaliningrad and after 6 or 7 years, replace them with Su-35.
Is very probable that the North MD receive first Su-27SM now in reserve, or perhaps Su-27SM3, once the VKS regiment have received Su-35