Please take notes here
ARM insist on it being called AArch64. Likely to be arm64 in Debian (name
already in dpkg arch tables, and autoconf tests).
ARMv8 summary
 Carries over the ARMv7 feature set. First 64bit ARM CPU, runs 32bit code too.
 ARM Neon SIMD. VFPv3 as from ARMv7. Includes ARM proprietary security extensions.
 supports virtualisation and LPAE. Fixed length 32-bit instructions.
 5 bits of register space, 31 general purpose 64 bit registers.
 SIMD 32x128bit registers. Better support for FP.
 Improved atomic support. Neon required.

Roadmap
 ARMv7 will continue. Cortex-A9 A15, A7 etc.
 ARMv8 under development. Hardware late 2013 onwards, specs late 2012.
 http://arm.com/architecture

Demo
 "FastModel", Ubuntu based system. Linux 3.4 for the model. Some port work 
 already done for apache, dropbear etc. All crossbuilt Maverick/Natty 
 using xdeb. 130+ packages built. For the demo, running a 32bit armhf Xorg
 and firefox.

Bootstrapping
 Toolchain does work. Cross built base system tested via model.
 Kernel patches sent upstream for comments on Friday
 (http://lkml.indiana.edu/hypermail/linux/kernel/1207.0/03025.html). 
 Basic rootfs via OpenEmbedded
 Toolchain changes to be backported to gcc-4.7
 Shared bug tracker.

Cross-bootstrap for Debian.
 Wheezy+1 would be nice.
 openjdk 32 bit will run out of the box due to MultiArch.

To help:
 Make packages cross-build well and make your build-dependencies MultiArch.