The next Space Shuttle mission is on track for a May 31 launch. (I asked them to speed it up a day so it would celebrate my daughter's 12th birthday, but you know how the government is.) This mission will take the Japanese Kibo lab to the ISS.
After that, the schedule gets fuzzier. The last mission which will service and upgrade the Hubble telescope, set for August 28, will have to be postponed 4-5 weeks due to the need to process two External Tanks for the shuttle and a standby rescue mission, required on this flight because the shuttle can't reach the ISS as a "safe haven" from the Hubble orbit.
COMMENT: There's something here I'm missing. We've been flying shuttles for over a quarter of a century. NASA should know by now how long it takes to do everything and how much "fudge time" needs to be built into schedules. The need for a major postponement because of ET preparation baffles me. Has NASA still not learned the art of realistic scheduling?