After the Cebit disaster (hey, they only showed a plastic box which could show three pictures, they didn't even try to put in at least the basic hardware) I was looking around to find a mobile phone, which looks nice, has a bunch of usable features, is slim and may replaces my m6 also.
So I decided to go with the Sony Ericsson W910i.
+ Stylish, slim, cool interface
+ Great sound quality for mp3 playback etc.
+ You can do anything via bluetooth: sync your contacts/calender/notes, control your media (for example skip to the next/previous track) using a BT headset, easily share pictures/music/videos with other BT mobile phones/PCs/...
+ Shake control: Shuffle your playlists and skip to the next/previous track by simply flicking your wrist
+ Auto rotate: By using a tilt sensor the screen will rotate depending on how you hold your phone. This is also great for animated backgrounds, games(!) etc.
SenseMe: Creates playlists depending on your mood.
+ UMTS
- Well, to be honest, the built-in camera is crap. But I won't use it anyway.
- No touchscreen.
Then I bought the Motorola S9 BT Stereo Headset. Nice piece of technology. I've just tested it for a few minutes but it's working fine and the sound is great. You can barely feel it on your head (behind your neck to be precise) and it comes without cables

So it's perfect for work-out and running.
Right now I'm waiting for a bigger memory card and then I'll see if this mobile phone can outdo my m6.
Another thing to mention: Everything is working perfectly with Vista x64 SP1.
Conclusion: If you don't want to wait for the M8 anymore or if you want a new mobile phone/media player until the m8 will be released ... think about the Sony Ericsson W910i. It's great.