These guys are great. I just bought an Integral 2 and talked to them directly about support. They say they'll support them for as long as there are parts available (and were very friendly on the phone, by the way).
They also do the battery pack upgrades for $98.
Here's their info:
Onick Voskinarian
Rollei & Hensel Service
1275 Bloomfield Ave. Building #8 Unit #68 Fairfield, NJ 07004
Business: +1 (973) 244-9662
Business Fax: +1 (973) 244-9817
Have a completely equipped worshop, and both used to work for Rollei USA and have decades of experience. They are not going anywhere any time soon.