For what it's worth, this is the response I got back from Aristo/Voltarc/LCD Lighting as of about 2 weeks ago:
From: Kessler, Louise
Sent: Friday, March 05, 2010 8:36 AM
To: Reddersen, Kurt
Subject: RE: Aristo replacement lamp availability
Thank you for your note below-
To up date you with the bad news..
– as of July 2009 Voltarc Technologies/Aristo Lighting went out of business. In mid August Light Sources, Inc. acquired the physical assets of Voltarc Technologies/Aristo Lighting.
The crux is that I do not know how much of the Aristo product line they will continue producing. I believe they will re-vive the replacement lamps, but not any of the cold light heads.
This all will not be address until the end first quarter of 2010 and possibly into the second quarter.
Much of this product line is still packed up in trailers waiting their turn to be gone through and evaluated.
At this point I'll hold onto your note and e-mail you when decisions have been made.
Louise M. Kessler
LCD Lighting, Inc.
37 Robinson Blvd.
Orange, CT 06477
Tel 1-203-799-7877 ext 3163