I base this on the fact that at Logitech the 900's are €199, instead of €399, and the fact that Amazon.com says there are only 3 left in stock.
In the past there was a multi year gap between models. I think the Triple-Fi 10 came out, in like 2006.
Please tell me what you think to calm my fears before i pull the trigger on a pair. I don't want to buy 'last year's model', or put differently, 'the old Apple (iPod) the day before the new one comes out'.