I just looked closer into those new icons, analyzed them and... yeah, don't like them that much. Old Office icons at least had something more linking them to their respective programs, like a written page for Word, or calc sheet for Excel, instead of just a first letter - that was way easier to read for me. On the new chart eg. I see 3 new icons with "P" and if I didn't know the colour theme of Powerpoint, I wouldn't know which one represents it.
Besides, as someone mentioned earlier, there's too much blue goin' on.