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put release notes draft in its own page.

# NetBSD-8 release notes items #

Below list needs to be expanded about ARM, MPSAFE networking changes.  
Then expanded to be readable by an average technically inclined person.  
Then reordered for most cool things on top.

* W^X memory protection enforced by default on architectures with fine-grained memory protection
* ASLR in some archs, MKPIE default for userland  
XXX list of archs
* SSP/FORTIFY default for userland and packages.  
XXX is SSP / MKPIE new to userland?
* In-kernel audio mixer

* USB system rework. added USB3 support.

The following networking components and drivers have been made MPSAFE:  
XXX long list, TODO.smpnet is a start


* Reproducible build (link to blog)
* Dynamic tracing (DTrace) for kernel code (link to guide/intro)


amd64, i386:

* Meltdown fixes
* SMEP
* SMAP
* amd64 kernel W^X
* EFI bootloader

xen:

* kernel modules support

ARM:

* awin, FDT  
XXX elaborate


* TC-USB, TurboChannel USB support for ...
* mntva, driver for mntmn's VA2000 amiga graphics card

* bta2dpd - new Bluetooth Advanced Audio Distribution Profile daemon
* iwm(4), a driver for Intel Wireless devices (AC7260, AC7265, AC3160...)
* nvme(4), a driver for NVMe hardware, ported from OpenBSD
* nouveau, an open source driver for modern nVidia graphics, ported from linux, available by default.
   (this is at the bottom because we mentioned it in 7.1 too)