During practice rounds before the start of the Emirates Australian Open in Sydney this week, Tiger Woods was spotted using a yet-to-be released Nike+VR-S+Irons long iron. For several seasons, Woods has been using Nike Victory Red Blades (3-PW), occasionally adding a 2-iron and removing his Nike VR Pro 5-wood.
As you can see in the photo below, the Nike+VR-S+Irons is a perimeter-weighted cavity back iron that has an undercut behind the face. It should help Woods hit the ball higher and land it on a more vertical trajectory, which should help Tiger stop the ball faster on the quick Australian greens.
Woods also appears to have switched to a new Nike VR Pro Limited 3-wood. On the greens in Sydney, Woods putted with a Nike Method 001 putter.( Nike+VR-S+Irons)
Interestingly, when I was at Nike Golf's club-testing facility in Ft. Worth, Texas, last week, one of the club-builders told me that Tiger's specs (lofts, lie angles, shaft lengths, etc.) have not changed since the company started building clubs for him. Whether he was working with Hank Haney to flatten his swing plane, or Sean Foley to make it more vertical, he never adjusted his equipment.