As for myself, I've been messing with it for the past hour. To open new tabs, I use a "New Tab" button in my tool bar in Firefox. This is not available for the Netscape browser and while I can open them with ctl/T I don't like using keyboard shortcuts. So that is a definite minus for me. I don't like the idea of "Share" nor the "Social" button. It seems to me that a good deal of this browser is built to take you to the Netscape portal and of course to generate income for the parent company (AOL). There are no such attempts with Firefox to do this. Another minus as far as I'm concerned. Of course, you can strip the button(s) from the tool bar (which I've done) and strip it down. McAfee's site advisor will not work with this browser (at least I've been unable to make it work) nor will several extensions that I use with Firefox such as Forecast Fox. So, while it claims to use the same extensions as FF it seems to be playing "catch-up". Another minus as far as I'm concerned.
It has URL correction but I rarely if ever mistype URLs so that is somewhat meaningless to me. The G-filter for Adblock Plus is not yet compatible so that is also another minus.
In short, what do you have with this new browser? Well... I'm not sure what it has to offer that cannot be had with Firefox. I'll continue to mess with it and I'm curious as to what others here think about it. I suspected that it would change my mind about keeping FF as my default browser and so far my suspicions have proven true. We'll see how thing pan out by tomorrow.
Any other impressions?