Prepare ICS release.

-new version numbers
-new system requirements

Bug:4445289
Change-Id: I759e548d7e292cd44f6b7084250e5c648d250e12
diff --git a/src/source/build-numbers.md b/src/source/build-numbers.md
index 8d1dd3b..09d2c5c 100644
--- a/src/source/build-numbers.md
+++ b/src/source/build-numbers.md
@@ -38,8 +38,9 @@
 Gingerbread    | 2.3 - 2.3.2  | API level 9, NDK 5
 Gingerbread    | 2.3.3 - 2.3.7            | API level 10
 Honeycomb      | 3.0                      | API level 11
-Honeycomb      | 3.1                      | API level 12
+Honeycomb      | 3.1                      | API level 12, NDK 6
 Honeycomb      | 3.2 - 3.2.2              | API level 13
+IceCreamSandwich | 4.0.x                  | API level 14, NDK 7
 
 Starting with Cupcake, individual builds are identified with a short
 build code, e.g. FRF85B.
@@ -100,8 +101,9 @@
 GRK39C | android-2.3.6_r0.9 | Nexus S
 GRK39F | android-2.3.6_r1   | Nexus One, Nexus S
 GWK74  | android-2.3.7_r1   | latest Gingerbread version, Nexus S 4G
+ITL41D | android-4.0.1_r1   | current IceCreamSandwich version, Galaxy Nexus
 
-The branches donut, eclair, froyo, gingerbread represent development
+The branches froyo, gingerbread, ics-mr0, represent development
 branches that do not exactly match configurations that were tested
 by Google. They might contain a variety of changes in addition to
 the official tagged releases, and those haven't been as thoroughly