Unfortunately, that list is outdated.  Chasey Lain hasn't done ANY videos for several years, Taylor Hayes and Dascha are retired, as is Tia Bella (for a LONG time now), Taya (formerly Tiffany Mason) I also believe has quit the biz... and Devon and Autumn are long gone from Vivid's roster... In fact, very few of the ladies on that page are still with them.

Jenna signed the contract for 7 years but according to the Entertainment Weekly article that appeared in their Power 100 issue almost a month ago, she intends to bang out the films she owes Vivid over the next year & then retire to behind the camera work plus mainstream film/TV opportunities (& having a family) while Vivid will probably spread out her movies' release in order to make it seem that she's still active in front of the camera.