Closer cooperation between Pakistan and Afghanistan is a key factor in enhancing stability in Afghanistan. Therefore the G8 are launching "a coordinated package of measures ranging from assistance for refugees and returnees to strengthening parliamentary contacts. Since a particular focus of the package is support for local security services and border protection, much of the funding is to be spent in the Afghan-Pakistan border area." The press release from Germany's Federal Foreign Office does not have much more information unfortunately.
The G8 plan is called "ambitious," but I wonder how serious the plan is since the press release states that Germany will only make 9 million euro available for 2008. Or perhaps it's more important how the money is spent rather than how much is spent; see Kyle's post about criticism from Congress regarding aid to Pakistan or the essay from spring 2007 "When $10 Billion Is Not Enough: Rethinking U.S. Strategy toward Pakistan" by Craig Cohen and Derek Chollet in The Washington Quarterly (pdf). Still, I believe 9 million euro does not go very far, even if the other G8 countries pitch in as well.
And with this, Germany's G8 Presidency ends. Japan will take over in 2008. Germany was not very successful, I believe. See the following Atlantic Review post: Who's Right on the G8-Summit: Bloggers or Academics and Politicians?
Related post on Afghanistan: Fixing the Afghanistan mission: The U.S. wants to try, but what about Europe?