Oddly enough, this version was released as beta yesterday, but it’s good to go today.
I did find one significant bug — if you don’t have any photos selected and you click on File->Export, iPhoto will hang (
apparently due to flickrExport hanging). If you let it sit for a minute or two it will select your entire photo library to export — probably not what you intended. I am confident that this will be quickly and proficiently fixed. I stand corrected — this is a ‘feature‘ of iPhoto: if you have no photos selected when you Export, it assumes that you want all of them exported.