Woh... just a minute...
I was minded to post right at the start, setting a few things straight, but held of. Now however a little "Balance brought to the Force" might be called for.
I fully sympathise with your frustrations, but I see things in a VERY different light to you.
You see, your issue is very much like my issue relating to Gmail Java App no longer working.
So let me indicate a few things...
Why these relevant applications are not working, are on a fundamental level, simply because of changes in the firmware. At a very base level this could be something entirely as simple as the actual version NUMBER itself being reported to the relevant application (in your case Blackberry Connect). This, after all, being how Firefox add-ons are often restricted when a new update to Firefox comes out, and the ONLY thing stopping existing apps working, is the fact that they are hard coded to a version number - not at all for any actual compatibility issues.
So whatever the case, whether it be because of something as simple as a version number change, or because of any actual changes to code in the firmware, nevertheless, we have to accept that this can be the consequence of new firmware.
And from various forums I have read, and items I have googled, this has indeed always been the issue with Blackberry Connect software... when a new Firmware comes out, a new version needs to be written - clearly one hopes, as soon as possible.
Now, this is where things get a bit more vague... The software you refer to... well for me, I find it listed on the RIM site, as if RIM were the author, not Nokia.
And if that is the case, then the onus is on RIM to release a newer version, not Nokia.
But if RIM are merely hosting this app on behalf of Nokia, then nevertheless, I am not for one single second convinced that even a call-back from Nokia Finland telling you that there will be no more versions of it, is anything at all likely to be true.
You clearly say yourself that vast amounts of people rely on this. And let's face it, this is not an N series device - this is the Flagship Nokia Enterprise users device here, the E90, so the very device one would expect Blackberry Connect users to use.
So one call, no matter how high ranking, from Finland, does absolutely NOTHING to convince me, even if it IS Nokia who have the right to answer the question and not RIM, that there will really not be another version.
It sounds far to implausible to be true.
So summarising:
1) Unfortunate the end result is (for both of us, in our own ways), this is a fair and understandable outcome of a new Firmware update. That is to say, that it means a new version of the apps we both need, need to be produced.
2) It is not clear entirely to me, that Nokia even have the right or ability to tell you there will be no more Blackberry Connect, as I always thought this was for RIM to release. But even if that is not the case then see (3) next...
3) Even after a high level call-back from Nokia Finland, assuming they even are the ones to issue the software, then I am anything but convinced that there will be no more Blackberry Connect software for the E90 - the Flagship Nokia Device for Enterprise Users, with a qwerty keyboard.
So I think there are a few errors in the story. Though of course, let me be CLEAR - your suffering is far more than mine, if you rely on Blackberry Connect for your email, I readily understand that. My loss of the Gmail Java app is a mere inconvenience by comparison.
And in terms of the benefits this new Firmware brings, I'm minded to be with you here, in that I don't really make use of Flash that much etc, so the apparent cons, outweigh the pros, for me.
But for many or even most, the new benefits will likely outweigh the downsides, one would think.
Whatever the case though, I hope you get your issue resolved soon, and be sure to keep us updated as to what results mate...