There's a misconception that if you bought an XYZ plug-in for your UAD-1, you have to buy it again if you get a UAD-2. I checked with UA, and was told you can transfer ownership of UAD-1 plug-ins to UAD-2 at no charge. Here's
the link describing the free upgrade program. The only plug-in that's not a part of this program is Nigel, as a UAD-2 version was never produced for the unfortunate legal reasons I mentioned previously.
As to new drivers disabling UAD-1, I didn't think to ask about that but I do recall a forum post when I was bemoaning the lack of 64-bit support. Someone who seemed to be knowledgeable but not affiliated with UA said not to hold my breath waiting for 64-bit UAD-1 support, as the hardware is totally different and he didn't think it could ever be made compatible with true 64-bit operation. He thought the best I could hope for was running 32-bit plug-ins using bridge technology.
I don't know if that was technically correct or not, but the UAD-1 was introduced 10 years ago so that means the chip it uses is even older. UA ceased production of the UAD-1 around four years ago yet continued to update and support it until this month, which is pretty good compared to the track record of tech companies in general. For example Apple produced computers with PowerPC chips until mid-2006, but the last OS to support PPC (Leopard) was released in 2007 (!). Snow Leopard, released in 2009, was Intel-only.
So as far as I can tell, the bottom line is that if you have a UAD-1 card, you have two choices: Keep running it as a 32-bit plug-in in a 64-bit system using a bridge, or buy new hardware and transfer your plug-ins over for free. No new UAD-1 plug-ins have been developed in what, two years (?), so it's already a given you won't be able to run plug-ins currently being designed for the UAD-2 on the UAD-1. I just don't see UA devoting resources to developing new plug-ins for a ten-year-old platform they discontinued four years ago.
If you have a mix of UAD-1 and UAD-2 cards, you can either run them under UA's 32-bit software which freezes what they can do (and the plug-ins you can run) to before 6.4 was introduced, or give up on the UAD-1 and go 64-bit with the UAD-2 card.
The issue of whether UA is saying good-bye to supporting the UAD-1 for monetary reasons has two sides. One is that they want you to upgrade to the UAD-2, which of course means more sales (although it could also be because they know what they're planning for a year or two down the line, and it definitely won't accommodate a UAD-1 so they might as well stop now). But another possible reason they might not want to broadcast is that legacy support is a resource sink. They may simply not want to have to deal with people asking support questions on how to use their UAD-1 running Sonar X5 under Windows 9 because that takes time and money away from supporting current products and developing new ones.
Having been in this biz as long as I have, suffice it to say this is a small industry and companies have to figure out how to allocate a pretty limited set of resources, while navigating the changes in consumer electronics (e.g., computers, and Apple/Microsoft operating systems) that often take companies, as well as consumers, by surprise. I can't really fault companies for the decisions they make, they're not made arbitrarily...companies don't want to upset any of their customers, but sometimes reality intrudes. The most important consideration is that a company stay in business, otherwise nobody gets
any support. If I had to choose between devoting resources to current UAD-2 owners or owners of UAD-1s and it was one or the other, I assume current UAD-2 owners would get priority.
Of course, this reflects my opinion, not any inside knowledge of what goes on at UA. But, I've seen this scenario play out at so many companies I would be shocked if UA was somehow immune from it.
Oh, and if anyone needs some Mac NuBus cards or Windows ISA cards, let me know...and PM me if you want a screaming hot Apple dual G5 PowerPC tower computer.