Intel alleges that AMD broke the terms of the x86 cross-licensing agreement by spinning off its manufacturing division into Globalfoundries, and says if the dispute is not resolved then AMD's rights under the agreement will be terminated in 60 days. AMD will no longer be able to design or produce Intel-compatible CPUs.
Short version: AMD will die in 60 days.
This is very, very bad. If AMD cannot manufacture CPUs then they will likely cease to exist (their graphics division will likely be sold off) and Intel will have a >99% share of the desktop CPU market, i.e. a monopoly.
The dispute stems from the excat wording of the agreement. Though it is not public, it is said to forbid AMD manufacturing over a certain percentage of its processors externally. The issue is whether Globalfoundries counts as a subsidiary or not, as AMD has less than a 50% stake in the company but equal voting rights with the Abu Dhabi owned ATIC.
http://www.techreport.com/discussions.x/16585
http://www.intel.com/pressroom/archive/releases/20090316corp.htm