[wp-testers] 2.7 Update

[Daniel]

Hey,
when im on the 2.7 Dashboard i see  You are using a development version (2.7-almost-beta-9417). Cool! Please stay updated so i click the link, then i see
"Upgrade WordPress 
A new version of WordPress is available for upgrade. Before upgrading, please backup your database and files.

You are using a development version of WordPress. You can upgrade to the latest nightly build automatically or download the nightly build and install it manually. Which would you like to do?"
i click Upgrade Automatically...downloads and installs, but no upgrade :S

Why?

Thanks,
Daniel.