Nice.
Weird thing... I had a 2012 iMac with a Wacom and had no issues.
When I upgraded last year to the late 2013 15" rMBP, the Wacom tablet in Photoshop has always acted weird for me. Sometimes my inputs won't register until I click one of my layers in the sidebar.
Would be nice to have this fixed, though I'm not sure if it's a Wacom driver issue, Adobe issue or Mavericks issue.