Of course they are. It would be silly to think otherwise. It has yet to be determined if AMD will use cherrypicked chips like the 55watt 2.2ghz DC opterons running @ lower speeds or start .065 early and produce DC turion's for that market while at the same time stockpiling AM2 for Dell and the big launch.
AMD won't be introducing dual core Turions until the new Socket S1 platform is available. The time frame is likely a late April launch with May availability. These new Turions are probably still based on the 90nm process since 65nm won't be ready until H2. In the mean time AMD is releasing faster clocked single core Turions to counter Yonah. It's interesting to note that while AMD is claiming that S1 will include both dual channel support and DDR2, Xbit feels the 638-pins of S1 are insufficient to house both features.
And as for the Dell-AMD rumours, they have been debunked for now. The rumours are probably a cash grab on somebodies part whether it is for stock investors and shorters, or for Dell to put pressure on Intel.