I. Windows 7 has Vista Kernal
Windows Vista 7 Beta version would only be a vista kernal enhanced but would have a new interface.
II. AMD's Phenom II
AMD is significantly behind Intel in developing cutting edge products, it is developing Phenom II processor which is in the range of 225 Dollars and is in performance better 20% than phenom I processor but is at the same pedestal as the Intel quad core Processor but Intel is ahead with its Core i7 processor which is significantly advanced compared to Phenom II with its 8 threads per core.
The phenom II has 8 MB L2 cache and 6 mb L3 shared cache.