Let me clarify: the standalone browser is not going away and WC subscribers can continue to use that. But, it's hard to dislike it being available through SDC to registered users as well. 
There's also a new tray component coming next week for WC subscribers. It'll notify you as to new updates, new skins, and more. If you've got SDC or the WC Browser installer, it works in conjunction with them as well.
Honestly though, I'm thrilled to have this directly in SDC. It's far more convenient as I often have that running.