Ultrafine's ortho litho. www.ultrafineonline.com/ulhicoorlifi.html I'm just finishing up a hundred sheet box of it in 8x10. It's definitely not the same film as what Freestyle had but works well enough. Another option would be something like the Rollei ATO2.1 technical ortho on Freestyle's website, yet it's really expensive compared to the Ultrafine product.
Thanks for this info - it's a relief to know lith film is still available. I bought some 4x5 from Freestyle late last year and soon after they said it had been discontinued. They must have sold out of their remaining stocks pretty fast. Good to know I can now get some more.