This is great news! If it's an indicator that training capacity is improving that's fantastic, and it may also indicate that the manpower shortages at the front aren't as acute as many have been claiming.
A typical negative spiral that it's hard to get out of is a situation where you're forced to send untrained or poorly trained people to the front to fill gaps, but that the poorly trained can't hold as well, reinforcing the problem. If they're able to break out of that kind of circle, while the russians are burning through their men at an unprecedented rate, it may indicate that things are slowing improving.