There is another very confusing announcement on maemo.org today :

http://maemo.org/news/announcements/..._released.html

On the one hand it is about the Maemo SDK : "Nokia has released the maemo 4.0.1 SDK in order to match the content with the OS2008 image released earlier this week." (which itself was not annouced there BTW).

On the other hand it is about the new firmware images : "About the new OS2008 image (OS 2008 version 2.2007.51-3 for Nokia N800 and OS 2008 version 2.2007.51-3 for N810): There have been problems in oscillator initialization timings in some devices causing problems in booting up the devices. This release fixes the problem and there should not be booting problems any more. The content of the image is just the same as the previous release".

On the gripping hand, if you click on the "content comparison table" between the Maemo 4.0 and 4.0.1 SDKs :
http://tablets-dev.nokia.com/4.0.1/4...omparison.html

...you'll find there are *a lot* of updated packages, and even some new ones.

There probably is a logical explanation for this, but it does escape me ATM.