Maximum Picasaweb image size doubles to 20MB

Picasa Web Albums has increased the permitted size of uploaded images from 10MB to 20MB.

The what's new page notes:

Bigger photo uploads
We've doubled the size of the images you can upload - from 10MB to 20MB per image. As always, you can still use Picasa to reduce the file size of the photos you're uploading to Picasa Web Albums.

This seems to have coincided with a similar increase in the maximum file attachment permitted for Gmail, also increased from 10MB to 20MB.  Perhaps this is indicative of Google having updated their underlying infrastructure to cope with increased file sizes.