Lumpish Scholar's Journal: Firefox (and Thunderbird) updates; still no 2.0 upgrade?

Firefox 1.5.0.9 and 2.0.0.1 (and Thunderbird 1.5.0.9) have been released. All include security fixes. But why are Firefox 1.5.0.8 users being offered 1.5.0.9? "If you already have Firefox 1.5.x, you will receive an offer to upgrade to Firefox 2.0 over the next several weeks", we were told almost two months ago. Yes, we can manually install 2.0; but where's the automated 2.0 upgrade for our less technical friends?