Wacom tablet leaves sketchy trails at the FCC, possibly a new Intuos4 (updated)

There's not a lot of detail here, but if you've been eyeing up a new Intuos4 wireless graphics tablet then it might be worth bearing this recent FCC application in mind. Behind all the confidentiality agreements and abstract descriptions that are standard fare for unannounced products these days, the official paperwork lists a highly suggestive model number: PTK-450. The smallest Intuos4 currently available is the PTK-440 and it's been around for a couple of years already, so perhaps we're due a refresh.

Update: Now the two bigger tablets have made an appearance: the PTK-650 and the PTK-850, which would hypothetically complete this updated Intuos4 range.