Dell really likes to leak inside information on their upcoming products to generate more curiosity. The latest to go down the "leak" road is XPS M1530 with all the high end specs you can think off. According to Engadget, the 15.4-inch laptop is based around Crestline GM/PM 965 chipset supporting various models of Core 2 Duo processor line up. The XPS M1530 could be good buy for fat wallet prosumers when it hits the stores in November (hopefully).
(Specs after the break)

Specifications:

# 15.40-inch display (CCFL up to 1680 x 1050, LED up to 1440 x 900)
# Core 2 Duo options from 1.5GHz (T5250) up to 2.6GHz (T7800)
# Crestline GM/PM 965 chipset with up to 4GB of 667MHz DDR2 SDRAM
# GeForce 8400M or 8600M GS options (up to 256MB)
# Slot-loading Blu-ray / 8x DVD±RW
# Options for 802.11a/b/g/n, WWAN, Bluetooth
# HDMI, VGA, 1394, ExpressCard, (3) USB 2.0, Ethernet, fingerprint reader, media reader
# 2.0 megapixel (with CCFL) or 300k (with LED) cameras
# Weight about 4 pounds

Source [Engadget]