janw.oostendorp on "My plugin version won't update"

Hi,

I've just updated my Plugin (default featured image) from 1.0 to 1.1
But it doesn't show on the plugin page. The download link goes to 1.1.zip altough the label says 1.0.
The readme.txt did update, although that is probably trunk.

And in wp-admins I don't get update notices.
I did update the stable tag on the readme.txt

What am I doing wrong?