Here is NASA's tentative 2007 shuttle launch schedule. I believe this
will be a great year for the shuttle and space station programs U.S and
international partners (vehicles, equipment, crews, technicians,
engineers, managers and administrators), with five planned iss
construction missions including adding 2 truss segments, another set of
solar arrays, the crucial node 2, and the increased science capacity
with the Columbus laboratory, and Kibo module.

http://www.nasa.gov/missions/highlights/schedule.html
"March 16* STS-117
STS-117 will deliver a second starboard truss segment and a third set
of solar arrays and batteries during the Space Shuttle Program's 21st
mission to the International Space Station.

June 28* STS-118
STS-118 will deliver the S5 Truss and will be the twenty-second mission
to the International Space Station.

Sept. 7* STS-120
STS-120 will be the twenty-third mission to the International Space
Station and deliver the U.S. Node 2.

October* STS-122
STS-122 will deliver the Columbus European Laboratory Module and will
be the twenty-fourth mission to the International Space Station.

December* STS-123
STS-123 will deliver the pressurized section of the Kibo Japanese
Experiment Logistics Module on the twenty-fifth mission to the
International Space Station."

tom