Krystian - I phoned Bookeen and told them to release the firmware right now. They did.
I'm back on the 1.5 firmware... surprisingly there's a fair bit of difference in 'feel' between the 2.0 and the 1.5. I definately prefer the 1.5, but I couldn't adequately explain why.
Now I'm back on 1.5 with mobi support, it really is my old Cybook with everything polished.