In response..
1. Museum Artifacts
2. STS-134 is the last funded mission. Pre-planning for 135 is in work, but funding for it is not available.
3. N-X can be launched by Delta and Atlas rockets.
4. The Constellation version is dead, but it was resurrected in a "lite" version to resupply the ISS and some cargo.
5. All plans currently scrapped, other than robotic missions.
Basically manned spaceflight by anyone but the Russians is done after 134.