Everything went smooth here on my N800. Upgrade was automatically announced, installed, booted.

My findings so far:

MUCH faster than before, especially the browser. There are some changes in the browser not only about speed, but also about rendering. Seems some pages look better than they used to.

Keybounce problem (D-PAD) still exist. I gave up on this, the may never fix it.

The metalayer crawler was NOT enabled.

So far happy with the upgrade!