You can now pre-order CAVE IN - White Silence in the BCD Hydra Head Shop. They sold through their initial allotment of LPs in 2 1/2 hours, but we are working on getting them more. CDs and shirts are still available.
You should also be able to find the LP at your favorite vinyl store come May 24th, just ask them to order it beforehand from Redeye Distribution.
Also, you can stream the White Silence track "Sing My Loves" on the CD and LP product pages.