I know of 3 that are going to Karlsruhe. Package seems to include a salary which is on par with the number of years for which you've held a license. Moving costs are also covered. Don't know of any additional monies.
It also seems that DFS head office lays down a basic package and every applicant negotiates with the unit of his choice for a better deal. Seems the individual units are very flexible, depending on how badly they want a person. If you are a weak negotiator, you don't get much.....If you pick a unit that's not too keen on offering more or doesn't want to upset the local controllers by giving you a salary which you should be entitled to(ie. slot you in on a training salary), you should maybe try a different unit/centre.