I ordered a complete tube set for my ML2s very recently. I used the email address and made it to Elina's attention since she knows me from the Brooklyn days. She responded fairly quickly- and promised the tubes w/in a couple weeks, given that their shop guy (same Russian guy that worked with Vlad) was very busy. The tubes arrived within the two week window.
As to future designs, I have no idea. As long as they can support the existing products, I'm good. There's a trick to matching the output tube to the amp--for some reason, the 6C33C triode in the output stage varies in acceptable range of bias current--and the specifics are apparently proprietary to Lamm. I never had an issue buying these tubes from them, since they match them to the amp by serial number and burn them in. (I gather that some of these tubes fail despite their robust design). I certainly hope they survive-- I've never owned a better sounding amplifier.