Xotl, I no longer remember how much of this I posted up prior to the change of management on the errata forums. Even if all of these are duplicates, it may be good to have them in an openly accessible place.
Developer-level errata:
Manteuffel, p. 21
Configuration B - change Turret weaponry from 1 ML & 1 ERSL to 3 ERSL
Morningstar, pp. 18-19
Header - change name from "Morningstar City Command Vehicle" to "Morningstar CCV"
Glory, p. 25
Armor Factor - change total "251" to "250"; change Rear armor "31" to "30"
Osiris, p. 51
Armor Factor - change total "81" to "80"; change Head armor "8" to "7"
Stiletto, p. 57
Armor Factor - change total "108" to "107"; change Head armor "9" to "8"
Tessen, p. 68
Variants - below paragraph add: "[Editor's note: Image pictured here is that of the TSN-C3 variant. - FP]"
Perseus, p. 89
Configuration A - move SRM6, ArtIV, 1 ton of SRM ammo into RT; move 1 ton of SRM ammo into RL; move 2 MPL from LT into CT; move 2 tons LRM ammo from RT into LT
Configuration D - move SRM6, ArtIV into RT; move SRM ammo into CT; move ERSL into H
Hellfire, p. 121
Armor Factor - change total "173" to "172"; change CT/Front armor "24" to "23"
Bowman, p. 125
Technology Base - change "Clan" to "Clan (Advanced)"
Mad Cat Mk II, p. 133
Armor Factor - change total "250" to "249"; change CT/Rear armor "13" to "12"
Scylla, p. 135
Armor Factor - change total "298" to "297"; change CT/rear armor "12" to "11"
Corax, p. 138
Free Space - change Aft "5" to "3"
Dagger, p. 141
Armor Factor - change total "251" to "250"; change Nose armor "77" to "76"
Free Space - change Aft "5" to "3"
Defiance, p. 144
Free Space - change Aft "5" to "3"
Tatsu, p. 150
Free Space - change Aft "5" to "3"
Huscarl, p. 152
Free Space - change Aft "5" to "3"
Configuration B - replace 2x SRM6+ammo with 2x SRM4/ArtIV+ammo
Shiva, p. 154
Free Space - change Aft "5" to "3"
Eisensturm, p. 156
Free Space - change Aft "5" to "3"
Xerxes, p. 169
Armor Factor - change total "173" to "172"; change Aft armor "42" to "41"
Edit March 5th: clean-up, FF changes, engine changes to reflect TO p. 307