With the introduction of the Legacy Cube, it's appropriate that the Holiday Cube has been renamed the Vintage Cube. Despite the name change, worry not, as the Cube will still be making its way back onto MTGO for the holidays!
The announcement regarding the name change and the most recent updates can be found here.
I admire that Adam simply acknowledges blue's place as best color in the Cube and that he embraces the high power level rather than going out of his way to try to nerf things. That's the very spirit that I imagine when I hear the word "Vintage". I can't say that I'm in love with every change being made to the Vintage Cube, but these look to be based on removing the worst performing cards and adding sweet new ones, which is ultimately a good model. The inclusion of Temples over pain lands is also one that I'm firmly behind.