Yes. The next Disney+ series What If will explore those new realities.

I would love to see The Multiverse

Technically, no. The Multiverse has existed next to the sacred timeline since Big Bang, we just paradoxically saw in episode 6 why the Multiverse existed.

This is just my personal take since they haven't explained everything super well, but I believe the "multiverse" we've seen in Doctor Strange is more of a pseudo-multiverse made up of all the different dimensions of Earth-199999, while the Loki show has opened up the true multiverse with complete alternate realities. I mean, the Loki variant we follow in the show only exists because the Quantum Realm does.

@SwagMasterDbl I think the mcu that we've seen from iron man to tfatws is post loki hence the multiverse references in doctor strange but the mcu also happens to be exactly the sacred timeline and even if this is wrong what happened in loki doesn't really have a chronology within the mcu especially the creation of the multiverse, let's say infinite branches happens millions of years before earth is even formed wouldn't that make the multiverse present throughout the whole mcu

The Multiverse has always existed. Hence why beings like Uatu have observed it since the beginning of time. In Doctor Strange Ancient One talks about many realities, those are not Dimensions.

Well, the TVA does seem to follow real-time to some extent since they always have to get to timelines as they appear. For me, that anchors the events of the show to the Time Heist, and thus the events of Endgame. It doesn't exactly make it all make sense, but it's a way for me to look at it without hurting my brain too much, lol.