And they've made an announcement in the DAZ forums:

FREE 3D Software Suite

DAZ is announcing the immediate limited-time availability of a FREE 3D Software Suite
including the full retail versions of DAZ Studio 4 Pro, Bryce 7 Pro and Hexagon 2.5

The availability of these extremely popular tools for free will allow an even larger number of customers to enjoy the benefits of creating their own 3D art and animations without a significant financial investment. Current customers can feel confident in sharing this opportunity with family and friends.

DAZ 3D is offering the following 3D products for free:

DAZ Studio 4 Pro (Including Genesis, winner of 3D World’s 2011 Software Innovation of the Year Award) : Retail $429.95

Bryce 7 Pro 3D Landscape and Animation Software: Retail $249.95

Hexagon 2.5 3D Modeling Software: Retail $149.95

3D Photoshop Bridge: Retail $199.00 (Included with DAZ Studio 4 Pro)

"We're excited to make this offer early in the year.” said James Thornton, CEO for DAZ 3D. “We wanted to give 3D digital artists an opportunity to experience this entire 3D Software Suite for free for the first time including the 3D Photoshop Bridge. A full suite of 3D models and 3D animation software products are available on DAZ3D.com,"
"This is a limited time offer because the 3D software is valued at over $800," Thornton continued. “DAZ Studio is the most popular 3D software on Download.com .

DAZ Studio 4 Pro, Bryce 7 Pro and Hexagon 2.5 are available via download only on DAZ3D.com between now and February 29, 2012 for free.

The download is eligible for upgrade pricing on current and future versions of each respective product, a potential savings of hundreds of dollars.

The Standard DAZ 30-Day refund policy will be honored. If you have purchased any of the products named above or any of the "stand-alone" plugins included in DAZ Studio 4 Pro in the last 30 days, you may contact DAZ Sales Support and request a refund.