AMD is planning to launch two 45 nm Phenom X4 CPUs (Deneb core) in 2008 with core frequencies of between 2.5-2.8 GHz and 2.4-2.7 GHz, with both adopting 6 MB L3 Cache and having a TDP rating of 95W, according to sources at motherboard makers. AMD will announce the final order date for its 125 watt Phenom X4 9750 by the end of the second quarter and the CPU will be replaced by a 95 watt version - which is available this quarter - while the 95 Wwatt Phenom X4 9850 will appear before January of 2009.
More here at Digitimes.
They should be compatible with AM2+ but then as usual with a phenom AM2+ on an AM2 board- you don't get to full Hypertransport speeds available when the phenom is on its desired platform.
I hope I wasn't too confusing.