To all Capitans using Tascam US- Interfaces, some info straight from the horses mouth:
Apparently, there will soon be driver update releases for the..:
US-2000, US-1200, US-200, US-600, US-322, US-366
Some betas are floating around for the US-1800, US-122MKII, US-144MKII
No update is planned for the US-1641, unfortunately.
As for release dates, nothing other than 'it shouldn't take too long'..
As for general rules of thumbs.. if you're not 100% sure that drivers for your periphery are available, don't just experiment with an OS upgrade. Especially not if a client is waiting outside, or if you're about to finish that huge ochestra piece you've been working on for months..
Ever heard some clever engineer say 'never change a running system'?
Certainly makes more sense than that apple/microsoft PR guy, who comes out every three months proclaiming 'Upgrade Now! It's Free!'