They updated the GM ordering guide again, and here's the changes for the '07 XLR:
Deletions
Exterior color (34U) Blue Steel
Interior color (182) Shale with Ebony accents
New Features
Exterior color (36U) Liquid Amethyst. Included and only available on (PLA) Platinum Edition.
(N87) 18" (45.7 cm) 15-spoke, polished aluminum wheels. Included and only available on (PLA) Platinum Edition.
Interior color (312) Cashmere
Interior color (354) Light Cashmere with Burl accents. Included and only available on (PLA) Platinum Edition.
(PLA) Platinum Edition, includes exclusive premium exterior color (36U) Liquid Amethyst or exterior color (41U) Black Raven; chrome-finish grille; unique door sill plates; (N87) 18" 15-spoke, polished aluminum wheels; leather-wrapped Burl color interior; unique Olive Ash wood trim and genuine aluminum accents; unique floor mats and Ultra Suede headliner, lower doors and seating surfaces
(MX0) 6-speed automatic transmission
New key fob design
Next generation OnStar
Wheels
N87
Wheels, 18" (45.7 cm) 15-spoke, polished aluminum
QF8
Wheels, 18" (45.7 cm) polished aluminum
ADI Available (Dealer-Installed)
YV197, 18 inch Wheel - YV197 Polished
Deletions
Exterior color (34U) Blue Steel
Interior color (182) Shale with Ebony accents
New Features
Exterior color (36U) Liquid Amethyst. Included and only available on (PLA) Platinum Edition.
(N87) 18" (45.7 cm) 15-spoke, polished aluminum wheels. Included and only available on (PLA) Platinum Edition.
Interior color (312) Cashmere
Interior color (354) Light Cashmere with Burl accents. Included and only available on (PLA) Platinum Edition.
(PLA) Platinum Edition, includes exclusive premium exterior color (36U) Liquid Amethyst or exterior color (41U) Black Raven; chrome-finish grille; unique door sill plates; (N87) 18" 15-spoke, polished aluminum wheels; leather-wrapped Burl color interior; unique Olive Ash wood trim and genuine aluminum accents; unique floor mats and Ultra Suede headliner, lower doors and seating surfaces
(MX0) 6-speed automatic transmission
New key fob design
Next generation OnStar
Wheels
N87
Wheels, 18" (45.7 cm) 15-spoke, polished aluminum
QF8
Wheels, 18" (45.7 cm) polished aluminum
ADI Available (Dealer-Installed)
YV197, 18 inch Wheel - YV197 Polished