They're planning to maintain basically current numbers of Su-25SMs in service. Iirc 36 aircraft have been upgraded as of 2010, and another contract for 36 to be upgraded by 2013 signed. Another iirc 80 were to be upgraded in the 2013-2020 timeframe. So that would total out at 152 airframes. Before the reforms there were listed 7 operational regiments of Su-25. 7x24=168 So we're looking at a minor net decrease. The Su-25UB will be replaced (presumably on a 1 for 1 basis) by new-built Su-25UBMs.