AFAIK... and it is not easy considering all the conflicting comments in public, they said... before the T-95 was cancelled that their intention was to have an operational force of about 2,000 Tanks, and a reserve of 5-6,000 tanks.
Their plan was to have as many as 1,000 of those 2,000 operational tanks T-95s but the main force of the rest of the tanks will be T-90s as the back bone and upgraded T-72s as the reserve.
Now whether they will just swap the T-95 with the Armata, or whether they will swap the Armata AND increase the number of upgraded T-72s is hard to tell.
They complain now about the cost of a T-90AM, but how much will Armata cost?
The best way to deal with expensive tanks is not to buy them 30 at a time, but to bite the bullet and order 500 over a longer delivery period. This gives the makers more financial security... when they go to the bank for a loan an order of 30 tanks for this year is not that useful when you need a new machine worth millions of dollars to increase productivity in your factory. An order for 500 tanks on the other hand, a purchase of a million dollar machine that will improve production performance suddenly becomes more viable because time and money saved in production might pay for the item in that order alone... whereas an order for 30 vehicles might require ten similar such orders to pay for it and the company has to have those orders before bankers will listen.