The second release candidate of NetBSD 6.1 is now available for download at: http://ftp.NetBSD.org/pub/NetBSD/NetBSD-6.1_RC2/

NetBSD 6.1 will be the first feature update for the NetBSD 6 branch. There are many new drivers, some new features, and many bug fixes! Fixes since RC1 include:

• Various terminfo fixes (PR#46793, PR#47090, PR#47490, PR#47532)
• Fixed a segfault in awk(1) (PR#47553)
• Moved boottime50 and its associated sysctl into the compat module. (PR#47579)
• Updated tzdata to 2013b, with the latest timezone info
• Fixed a crash when the security.curtain sysctl is enabled (PR#47598)
• Fixed some IPF locking issues
• Fix a crash on statically-linked programs for NetBSD/alpha

A complete list of changes can be found at:
http://ftp.NetBSD.org/pub/NetBSD/NetBSD-6.1_RC2/CHANGES-6.1

Please help us test this and any upcoming release candidates as much as possible. Remember, any feedback is good feedback. We'd love to hear from you, whether you've got a complaint or a compliment.

We get a lot of comments asking for tips on using the raspberry pi so I thought I would point out some docs:
evbarm/rpi wiki docs
An example of the rpi.img can be found here:
http://nyftp.netbsd.org/pub/NetBSD-daily/HEAD/201303221130Z/evbarm/binary/gzimg/ notice the HEAD (NetBSD -current), datestamp, arch path for future reference

There are also some concerns about building a kernel/img on your own.
building NetBSD
build.sh is one of the best features of NetBSD. You can cross compile from almost any other unix-like system with very little difficulty.