In the final moments before the release, I did not get around to doing some things I had planned, like continuing the work on the manual or even updating the TMX format changelog. But, I did not want to delay the release since now I will be visiting family for a while and soon the Google Summer of Code students will start working full time on their projects. So those updates will come as time allows!
In the meantime, let me know how you feel about Tiled 1.0 and whether it helps you in your project. Also let me know if you find any issues.