Latest info, taken from various media and homepages
Germany now sends refugees back to Austria, if they refuse to apply for asylum in Germany. They will no longer be allowed to pass through. But ID papers/passports are not required if you want to ask for asylum in Germany.
Denmark now returns refugees to Germany, if they refuse to apply for asylum in Denmark. Ferries/trains/busses/cars to Rødby, Gedser or Padborg will be controlled. Most refugees will probably be met by the control, and in that case they will have to apply for asylum in Denmark or be returned to Germany. ID papers/passports are not required if a person wishes to apply for asylum in Denmark.
New Swedish passport control: All passengers going on trains to Malmö will have to change at Kastrup station and will only be allowed to continue to Sweden if they have PASSPORT, EU DRIVERS LICENSE/ID CARD or SWEDISH RESIDENCE PERMIT. Any other kind of ID will not be accepted. The control is performed by Securitas, so passengers without the required ID will not be forced to apply for asylum in Denmark immediately but will not be allowed to continue to Sweden. The same goes for passengers on the ferries from Helsingør to Helsingborg. Therefore it will no longer be possible to apply for asylum in Sweden without a passport (unless a person avoids the controls).
Ferries directly from Germany or Denmark to Finland or Norway: Finland requires passport AND VALID VISA, Norway only passport or ID-paper issued in EU (like Sweden).
If somebody wants to apply for asylum in Denmark, this can be done at the police station in Cph Central Station or in asylum camp Sandholm (s-train E-line to Hillerød, off at Allerød, bus 381 a few stops).