The official weekly of Ubuntu is already the number 140 and you have it available with the following contents:

Karmic Open for Development
Notify OSD to be discussed at Ubuntu UDS Karmic
Ubuntu Open Week Summary
New Ubuntu Member
Ubuntu Hug Day: May 7th
Ubuntu Stats
LoCo News: Jaunty Release Parties
2.2.4 Launchpad
Launchpad's web service code released as stand alone libraries
New prefixes in the help sub-forums
Hiding post (beans) count
Announcing the Ubuntu High Availibility Team
Ubuntu Brains
Ubuntu 9.04 does not use ext4 by default
In the Press & Blogosphere
Ubuntu-UK podcast: Partners in Crime
Engaging Ubunt Canonical Software Partners
Team Meeting Summaries for April 2009
Upcoming Meetings & Events
Updates & Security

Complete you can find it here and when finished in Castilian translation here .