Yes 4.10 is out and it appears that webkit is being used. The desktop (by pressing the PS key) can be brought up and pictures can be XMB previewed...haven't tried anything else but it appears like the XMB is always loaded for the browser, this might indicate uses for XMB apps with the browser (communication between XMB apps).
No WebGL or HTML5 features like <video> yet....minimal GTK API which is to be expected as it's not finished yet.
No new chat, contact list, activity log/calender, no integration between applications...this is not the upgrade guys, it's just a patch to get the web browser functional enough for
something Sony has planned.
That it now correctly displays web pages means it's most likely a minimal webkit port to the existing netfront browser front end, they could have done this anytime in the last two years...if webkit2 for security then anytime since Jan with GTKwebkit2 1.7, essentially this is probably the same unfinished webkit2 that the vita is using with the same lack of features.
Remember it's not just me that has provided information, androvsky too and to this point he is as correct as I am and if it goes no further than this, I was wrong on integration between applications and a browser desktop and he was correct.
In my opinion this is just a small part of what's coming, we might see a few more little updates but by Spring we should get the major update. Remember GTKwebkt2 API is not finished yet, Gstreamer 1.0 is not considered complete it's still called Gstreamer .11/1.0 which means it's somewhere between the unstable .11 and the finished 1.0 (Gstreamer is to be used for the HTML5 <video>). If you look at the Gnome browser Epiphany, it's supposed to have a completed GTKwebkit2 API integration before March 28.
androvsky just provided a link to confirm it's webkit in BY3D
http://www.scei.co.jp/ps3-license/index.html
patsu in BY3D has confirmed:
I'd also like to point out that Sony considers this a .1 minor update <grin>.