Normal Hand Unit A - Joints of two different diameters are included for each: 3mm and 3.7mm.
Custom Hand Unit A - Joints of two different diameters are included for each: 3mm and 4.4mm.
(Click for larger view)
To be available in November. 525 Yen per set (inclusive of tax).
The company just upgraded their size as Part B, where the design is pretty much the same as Part A, but is intended for 1/100 plamos.
Normal Hand Unit B - Joints of two different diameters are included for each: 4.2mm and 5mm.
Custom Hand Unit B - Joints of two different diameters are included for each: 4.2mm and 5mm.
(Click for larger view)
To be available in January 2009. 630 Yen per set (inclusive of tax).
Doesn't look like the usual hand unit of MGs, but the price is definitely a lot lower than the offerings from B-Club. Both set A and B are good choice if you're thinking of getting extra pairs of hand unit to substitute the current ones on your plamo.
Images from Kotobukiya's Product Release page.
Also, HMM 1/72 Shield Liger Mk. II (first released back in March) is scheduled to be reissued.
November release, 5,040 Yen.
Image and information from Amiami.