It does seem a little odd. They haven't even officially announced the new boat yet. I would think they wouldn't stop production on the old one until they were ready to start taking orders for the new one. But then again, I'm not in the business and I don't know how long the process takes to change the production.
If you can't buy new, there are quite a few used Mahe 36s on the market as well.
If you still want a very small catamaran
, you could consider the Gemini
Legacy as an alternative. Or there are small cruising trimarans too - there is the Dragonfly 32 & 35, and Corsair