A short summary about the similarities of the LS/KB/TS-Hardware:

======= PPC =======
LS1 - KB : the KB is black and lacks the front USB-Port
HG - HS - KBHG: no big hardware difference. UBoot + Firmwares work on all three boxes.

LS/KB - TS: big hardware difference but same arch. OpenLink and the stock Terastation
firmwares use glibc 2.3.x as a base...thats why both can use the same devtools

TS - TSHS: no big hardware differences expected. but this is not confirmed as there 
was no one who had JTAG on these boxes to test this.

TS/HS - TS ProI: other case, different board. similar firmware (if AD is neglected)


====== MIPSel =====
LS2 - it is the only box based on Little Endian MIPS. Thats why no generic folder is 
existing for MIPSEL-boxes in the downloadsection.


======= ARM =======
ARM9 - ARM11: different CPU instruction sets, so most likely you can treat these two
as different archs
ARM9E: http://www.arm.com/products/CPUs/families/ARM9EFamily.html
ARM11: http://www.arm.com/products/CPUs/families/ARM11Family.html

=== ARM9 ===

LS Pro - LS Live: no severe hardware difference found till now.

LS Pro/LS Live - KuroboxPro: severe hardware differences regarding the design of the 
board. but hopefully it will have the same hardware base so we can use it as a 
development platform with JTAG for the LS pro + LS Live 
(these were the first two boxes that lack a JTAG Port)

=== ARM11 ===
There is not enough information about the TSProII and the TSLive as noone has one.
We didn`t see any photos of the board..so we cannot say if these boxes are different.
It is expected that they are similar.