Release notes should be translated

After clicking `Upgrade' button, `Release Notes' dialogue displayed.
Its title is translated to `リリースノート', but the content does not.

I think that its content should be translatable, or it includes link to translated release note wiki page at least.

Background: I hear many times that some Ubuntu Japanese Team members says "read release note before upgrade",
but many Japanese users do not read English messages well.
And current update-manager's behaviour does not have way to translated release notes.
Japanese release notes translated well, but some people cannot reach it.
That's sad thing.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: update-manager 1:0.150.3
ProcVersionSignature: Ubuntu 2.6.38-11.50-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
Architecture: i386
Date: Sat Oct 15 22:27:24 2011
EcryptfsInUse: Yes
GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=
 /apps/update-manager/first_run=false
 /apps/update-manager/show_details=true
 /apps/update-manager/window_size=(600,626)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=ja_JP:en
 PATH=(custom, user)
 LANG=ja_JP.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to natty on 2011-04-26 (171 days ago)