As always with evolutionary questions, "it depends". 2,500 years isn't time for a great deal of biological evolution, although it allows for a lot of cultural change.
For biological evolution, the question is what external pressures the species is under. Does the climate grow cooler or warmer? Do new prey species move into the area, or old ones become extinct?
For cultural change, we think there needs to be language, and it needs to be sufficiently flexible to express ideas that aren't just about the here and now. If the language becomes capable of that, and there are motivations to use it, things might change fairly quickly. We can only guess at what the minds of sapient wolves might be like: there's an entertaining answer, albeit in a wolf brought up by humans, in the webcomic Freefall.
It's possible for culture to influence biological evolution, which might well speed it up. If, for example, there were varying levels of sapience among a population of wolves, and the high-functioning ones started selecting similar mates, that could breed up their mental capability significantly within the timescale you're talking about. However, this is uncertain; they might also become excessively inbred and die out.