Okay, thanks. I had done a quick web search but all of the results were about the proposed deadlines, first 2009 then 2/2011. It seems that they haven't decided yet whether to make the 406 ELTs mandatory at all.
The paper work requiring the change to a 406 ELT was sent to the Administrator of transport Canada, there was no alternate method of compliance and he refused to sign it, it went back to committee and what you see today is what the committee came up with the 4 different types of ELTS in the third column, and the different types of aircraft, and areas to operate.
Hopefully that's true here as well, though with the end of satellite coverage on 121.5/243, I can't imagine they won't eventually require the 406 MHz ELT in all GA aircraft.
There was never any sat coverage of 121/243 type ELTs they were all Radio freq and monitored by other pilots and safety groups
The reason I asked is that the airplane I'm looking at was originally supposed to have a 406 installed at its current annual, and the seller had one on order, then yesterday told me he'd decided against it. Not sure if the reason was cost or that the order was taking way too long, but anyway I was concerned about flying back through Canadian airspace with only a 121.5 MHz ELT, not to mention that I overfly Canada fairly often en route to Ohio.