"Ukraine IT outsourcing tops in Eastern Europe" article by BPOUkraine elaborates a little bit on recent Goal Europe report by giving some additional information. It is interesting that according to the data from Ukrainian Hi-Tech Initiative Ukrainian outsourcing market was about $600 million in Y2006, which is more than two times greater then the number reported by Goal Europe - $246 million. I tend to think that the truth is somewhere in between.
Also there is a typo in the article: it says that SoftServe has more that 200 employees, but in fact SoftServe employs more than 700 professionals in 6 development centers in different regions of Ukraine.