With all this hubbub about MBP updates I can't help but wonder when the next MB update will be. I know it just had the bump to Santa Rosa but when will it see the current chipset paired with the 45nm Penryn chips? Any ideas/speculations? What about the possibility of LED backlighting? I know this may be unnecessary on a smaller screen, but any battery improvement is good. What about the new trackpad or a backlit keyboard? I just wanted to create a platform for MB refresh thoughts!