I mean they sound very different

On a transparent speaker like the Sonjas, that difference will be very clear, and the new presentation might not be to your liking, if you're used to your existing setup, with tubes on the pre, and the Bryston...
As for the Auralic, I haven't received any communication from them regarding the update. I know both Vega and Aries are due for updates soon (with support for Quad DSD, among other things) as they announced it in Munich a few weeks ago, but I wasn't given a time frame. In any case, I've emailed them, and I'll get back to you once I know more...
thanks,
alex