Comment 22 for bug 1103594

I can confirm, using the quantal kernel with -proposed. I don't know if there are any new fancy features I should be looking out for with the touchpad, but two-finger vertical scrolling, and three-finger moving of windows both work and I have noticed that there is a Pointing Devices control panel now, with a CyPS/2 set of options for things like palm detection.

I hope that helps.

~$ sudo lshw
hostname
    description: Portable Computer
    product: XPS 12 9Q23 (xxx123x#ABA)
    vendor: Dell Inc.
    version: A05
<snip>

~$ uname -a
Linux ... 3.5.0-28-generic #47+kamal16~DellXPS-Ubuntu SMP Thu Apr 11 20:21:37 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

~$ xinput | grep CyP
⎜ ↳ CyPS/2 Cypress Trackpad id=12 [slave pointer (2)]