As of 03/04/2006 9:30PM PDT, here's the count of registered cars for Bimmerfest '06.

2002 (2002) 14
3-series (E21) 12
3-series (E30) 35
3-series (E36) 86
3-series (E46) 156
3-Series (E90/E91) 15
5-Series (E12) 1
5-series (E28) 4
5-series (E34) 15
5-series (E39) 52
5-series (E60) 12
6-series (E24) 8
6-series (E63/E64) 5
7-series (E32) 1
7-series (E38) 10
7-Series (E65/E66) 4
8-series (E31) 2
CS (E9) 6
Flying In () 2
M Coupe (E36/8) 9
M3 (E30) 8
M3 (E36) 82
M3 (E46) 87
M5 (E28) 4
M5 (E34) 4
M5 (E39) 17
M5 (E60) 2
MINI Cooper S (MCS) 8
Other - BMW (OtherBMW) 1
Other - Non BMW (NonBMW) 11
Senior Six (E3) 3
X3 (E83) 3
X5 (E53) 11
Z3 (E36/7) 8
Z3 Coupe (E36/8) 3
Z3 M Roadster (E36/7) 10
Z4 (E85) 5
Z8 (Z8) 1

http://www.bimmerfest.com/event.php?action=currentstats

Looks like it's going to be an E46/E36 show. Big discussion going on in the bimmerfest forum about a Miss Bimmerfest contest. If I go, I'll take my camera and post the pictures here.