The Inq claims Intel will kill the BTX standard in 2007:
According to next year's line-up, the Intel has decided not to release a single BTX motherboard. Current BTX and picoBTX motherboards will be replaced with ATX and µATX form factors.
The Bearlake chipset will be introduced in second quarter of 2007, and Intel has reserved a grand total of four products for Q2'07 with two more products in Q3'07. Dragontail Peak (Bearlake-P NorthBridge with ICH9DH SouthBridge chips) and Frostburg (BearLake-G and ICH9) are utilising the ATX form factor, while Johannesburg/Montpelier (BearLake-Q and ICH9DO) and Buffalo Creek (BearLake-G and ICH9) come in the µATX form factor.