There was an information from Mitel about that issue on the development list.
Traffic throttling has been applied to the blades server for the registered (paying) users to be able to obtain this update - apparently the server became very popular and the registered users and partners asked for this. That's quite easy to understand as an idea, but for me it looks like the other traffic was throttled down to zero
Anyway, there was a confirmation that access to the blades server will be available for the non-registered users too, but no further info was posted (timeframe or whatever).
Guess we have to wait patiently
Cheers
Stan