The WINE project is going on 15 years in existence, and two
years ago, it finally went into beta. Through the beta stage, there has
been a consistent release about every two weeks, which often brings a
fair number of improvements to this software for running Windows
programs on Linux (and other operating systems). Sparked by curiosity as
to how the performance of WINE is affected release by release, we have
gone through and benchmarked the past seven releases. While this only
represents the past four months of work by the WINE community, the
results may surprise you.

http://www.phoronix.com/vr.php?view=11539