Looks like they are currently available on ebay reasonably.
CATTLEYA WARSCEWICZII ORCHID - (eBay item 260189434618 end time Dec-09-07 11:57:42 PST)
May be a selfing of someones run of the mill plant, don't know, but you may want to email the seller and ask about the parents or his source of the seedlings.
Both of mine are from Floralia and I get them when Floralia comes up to the shows in Southern California. One is a suavissima that should be a very pale pink, almost white, and the other is a cross of 'Rochellensis' and 'Celeste', which looks like it is the same thing as the first seedling, see below. Floralia has been line breeding a lot of Catt species so I am hoping these will be of very nice form. My records show them both to be blooming size now, and I recall when moving one of them to high light, southwest corner of GH, that it was certainly mature. Maybe it just needed the high light to get some blooms going.
Here are some of the exceptional clones with prices. I think the pictures will be gone soon, so you might want to down load them:
Cattleya warscewiczii dark variety orchid species - (eBay item 200168584189 end time Nov-06-07 17:34:11 PST) cattleya warscewiczii albescens--RARE--species-ONLY 1 - (eBay item 190177456164 end time Dec-02-07 10:30:00 PST)