TO also finally agreed to allow 15 proxies for Vintage, sadly it might be quite late to significantly boost attendance, but I hope it's a good start for the future.
This is huge for me! Sadly this news came way to late to consider attending, but this might very well my first big Vintage tournament next year
In this Article it is announced that the Arena Team and R&D will release a curated List of "the most relevant cards" from non standard sets to MtGA to allow for the client to support Formats "beyond standard". It is hinted that at first this will mean working towards Pioneer, but this might mean that pseudo-versions (with the most relevant cards) of older formats could be added to the game.
To me this sounds very much like we could see something like the proto-Vintage Format that was on mtgo before Vintage masters was added could very well be a reality further down the line.