Wow, five M240 users in Toronto?
It will affect, but nothing like "slashing" will happen. BH price of M10 and M240 is the same. Entire digital M market is small and Leica is the only digital RF manufacturer. As long as digital M is supported by Leica it is desirable. Even M8 which has partial only support from Leica is still one of most expensive digital camera among used ones.
Personally, I going to keep M-E and will try to get another used digital M. Who knows, by the time I'll have enough money, M10 might be trashed by M11 followers 🙂
At 6500$ for new M10 vs 3500$ for used M240 it is win-win situation for those like me, who would prefer to have two cameras instead of one.