RealGamer has posted a review of SpellForce: Breath of Winter, giving the expansion pack an overall score of 7.4/10. Their conclusion to follow:
Spellforce was something of an overlooked classic and Breath of Winter offers you more of the same but unfortunately no more to tempt you to part with your cash. If you didn't have enough first-time round then this is a highly recommended buy. However if you sucked every drop of enjoyment out of the last one, then you should perhaps think of passing this one by, as it's only an average expansion to a great game.