AMD/ATI Delayed anymore the launch of R600?

AMD/ATI has delayed anymore the launched of R600 to Q2 2007. Is there any problem with the GPU? No, AMD/ATI has other planned for the launch. and What’s issue of the reason that AMD/ATI delayed the launch ?

AMD/ATI has prepared a new series of processors based on Socket F. The AMD Excellon, these dual core processors are AMD’s first test of the feasibility of Fusion program. Excellon will come with an integrated graphics core which is a subset of the R600 VPU. This graphics core will share system memory with the CPU. AMD/ATI claims the Fusion will make R600 more faster than newest NVIDIA GeForce 8600GTS. AMD also will inclusion of 16MB fast on die.
AMD/ATI will offer two choice options. First choice, the user can choose slot in a second Excellon processor for a total of four processor cores and two graphics cores.
Second choice, the user can choose to install an ATI RenderX chip in the second Socket F. The RenderX is two R600 dies in a single chip and gives 5 - 6X increase in graphics processing capability.
The RenderX chip is the reason for delayed the release of the R600. AMD wanted more R600 dies diverted to the production of the RenderX. AMD/ATI say that once user get the AMD Excellon, The User will choose the RenderX than GeForce 8 series. AMD/ATI looks like really prepared for the quality of product. And its make the battle between nVIDIA and ATI getting heat. Can ATI/AMD beat the rivals???