Well, it looks like Intel will finally be delivering that ultra low voltage Core i5 chip this summer. Though it was revealed back at CES, MSI's saying the Core i5 520UM CPU will be ready by June, and that it'll be subbing the 1.3GHz Intel Core 2 Duo SU7300 CPU and ATI discrete graphics in its X-Slim Series for the more electrically efficient processor. Acer also appears to be doing the same with its Aspire TimelineX 1830T. While MSI didn't provide us with firm benchmark scores, they did pass on word that the Windows rating score is higher on the i5-powered X360 than the previous version, and the endurance is quite good -- they expect 7 to 8 hours with an eight-cell battery. The company hasn't determined pricing on the X360 but predicts that it will go for around $700 to $900 depending on the config when it hits shelves in the June / July time frame.