I think the company means Soyuz-U and its Progress spacecraft but anyway Arianespace says
The 1743rd flight of a Soyuz launch vehicle was performed on Thursday, May 7, 2009 from the Baikonur Cosmodrome in Kazakhstan at 22:37 Moscow time (20:37 Paris time).
Arianespace and its Russian partners report that the Soyuz TMA-15 manned transport spacecraft was accurately placed on the target orbit for another mission to the International Space Station. This was the fourth Soyuz family mission in 2009.
on May 8, 2009 12:04 PM | Reply
What??????
The launch of the Soyuz TMA-15 spacecraft by a Soyuz-FG rocket from the Baikonur cosmodrome is planned on May 27. Common mistake to mistake the Soyuz spacecraft with the Soyuz booster rocket.