Microsoft has released an updated Surface Pro 2 with slightly improved CPU    



From WP Central:

Did you buy a Surface Pro 2 or plan to buy one? If you’re planning on buying one you might want to wait a bit until current retail stock is replenished with the Surface Pro 2.5. That’s right, Microsoft has silently refreshed the CPU inside the Surface Pro 2 that launched two months ago with an ever so slightly improved one.

When the Surface Pro 2 went on sale in October its processor was the Intel Core i5-4200U. That processor had a clock speed of 1.6 GHz. Newer Surface Pro 2’s are now shipping with the Intel Core i5-4300U, which is basically the same processor except it has a slightly higher clock speed at 1.9 GHz. The newer 4300U processor also contains Intel’s Trusted Execution Technology, which is hardware-based technology for enhanced security.

  Microsoft quietly updates the Surface Pro 2 with slightly improved CPU