I tried the 2015 Beta 3 just out of curiosity. I got the browser links on the desktop with the NG, but Google Chrome current version wouldn't open at all and MSIE 9 was dead slow. When it finally opened after over 2 minutes, got a blank screen for another couple of minutes before the homepage opened. But no bookmarks came along with the browser.
I typed in an address and it took a full 3 minutes for the page to begin to open. After waiting another several minutes, I gave up. The page never did fully finish opening. I tried another link and same thing. I reverted back to my prior setup. I'll wait for the final and see what happens.
This all could be a result of my 2008 Dell Inspiron 1525 laptop, Vista 32 bit and all updates with 4G RAM, Intel Pentium dual quad processor T2390, 1.86ghz. No virtualization available in BIOS.