All under the sun ( :-)

From the Samsung Customer Support:

For example, model: UA55B7000WF.

U - Ultra Slim/LED
A - Auto (N=NTSC, E=SECAM)
55 - Screen Size (55 inches)
B - Year Design (B=2009, C=2010, D = 2011 and so on)
7000 - Series
W - Design/Style Series
F - Full HD DTV (R= FHD Ready, M=MPEG4 DTV)