The Great Plateau is where OoT's Castle town used to be. The Temple of Time is the exact same exterior design as OoT, there are wrecked building structures throughout the Great Plateau that align perfectly with how Castle Town in OoT was structured, and it has the same general proximity to Hyrule Castle as it did in OoT. Not too mention Aonuma has hinted that it's related to OoT. Given the released timeline and the Fallen Link timeline confusion; I have a feeling that this will be the equivalent to TP and WW on the Fallen Link timeline. It'd also serve as a good anniversary title as we've already seen elements from WW, TP, OOT, SS and the original Zelda present in this game, in terms of characters, gameplay, certain locations and structures. Given its in the Fallen Link timeline, I think we can also expect homages to ALTTP, MM and Zelda 2 in addition to the already mentioned titles we saw in the demo alone. It'd essentially commemorate the biggest and most important titles in the franchises history.