i've heard of a rumor of a possible christmas 2013 release of the xbox 720. as for the ps4, i don't know myself. don't quote me on that xbox rumor though, it's probably a bit old, and potentially denied by now.
And welcome to the site . So DTL is just a portal same as DTD. They have to do nothing with Kingdom Hearts. But in KH1 Sora said "I now know without doubt Kingdom hearts is light" And the light came inside of the door. Isn't that door the DTD? So why did Sora call it Kingdom Hearts?
kingdom hearts is supposed to be the heart of all worlds. in the case of the end of KHI, the door we see there is in fact the door to kingdom hearts. now we didn't really see much of what was behind the door to kingdom hearts, just the darkness ASoD was trying to get, the light that Sora calls forward, and that little area behind the door we see when Sora, Riku, and company close the door. everything behind that little area we see is whited out, if i remember correctly, leading me to believe that there is light behind the door in the midst of the darkness in the forefront, where the darkside heartless appear.
But are DTD and DTL a part of kingdom hearts? Then what is Kingdom Hearts. Is Kingdom hearts a kingdom with hearts? Wow my mind is again messed up :/
welcome to the kingdom hearts series. the one that's not the most sensible of series. i guess at least in terms of the DTL, it might not lead to kingdom hearts, because if that door of light that apeared before sora and riku at the end of KHII was the door to light, as sora called it, it only took them back to destiny islands. so at least in this case, if that was to door to the light, it was just being used as one would use a portal to get into the dark realm (i.e. the organization, riku as ASoD, etc.)
this may be just some crazy idea on my part, but what I'm starting to think that the door to darkness and door to light could be one in the same. if you stop and think, and want to be technical, one side of the door could lead to darkness, while the other side leads to light. again, could just be some crazy idea that wouldn't work out, but it's just a thought.