With the latest version of ubot, 5.9.33, I'd like to know the status of the new browser too. I've been on 5.9.19 for some time now and still only use the old version of the browser. Main reason? Because it's faster. I use the jquery 2 base for a lot of things in my software builds and I've found that it can be slow, slow slow on version 39 of the embedded chrome.
Any news? I can see my hand is slowly but surely being forced towards the newer version for proper js and html 5 compatibility.
I am interested in this too. I have been waiting for a long time for starting with the new version 5 (still working with 4.20), but it seems is not ready yet. Shame!