I've had a bad feeling about Steve Augeri's voice ever since it was announced that they divided the singing up on Generations - that would never have happened in the Perry days, not that I wish to get into the Perry / Augeri argument.
I'm a huge Journey fan, and finally got to see them in Edinburgh over here and it was a great gig, and I didn't notice anything untoward going on, although it was so loud in the crowd it was hard to hear much at all.
I guess my real concerns were when I read the initial few gig reviews over at BT, where apparently on the first night of the last US tour, Augeri didn't sing a single note, virtually or otherwise, till the second half, and that was a concern, so I have to agree with other well-observed posts I've read on here that all this isn't much of a big surprise unfortunately - Augeri has obviously had problems with his voice for years.
I really hope they do make some announcement though, as they're looking kinda guilty till proven innocent at the moment...
And if they do own up to it, I don't know what the answer is to the problem, short of replacing Augeri, which would be a shame all things considered.
It'll be interesting to see what transpires when the Journey / Def Leppard tour kicks off- there's a gig I'd love to attend...
Just my 10 cents from over here in the UK...

Andy
a.k.a. "Fallingman"
http://www.fallingman.co.uk