I emailed xboxsubmissions twice, first on May 31st and then on July 31st and I haven't yet received a reply. It was my understanding from the wiki article that even if the place was not deemed to be a viable candidate, I would still be contacted.
If your game does not pass the review then you will be contacted.
My game is pretty compatible (a few bugs can sometimes occur) but I believe the compatibility is at least enough to make it to QA and not get rejected at the first hurdle, thus I expected some communication either way.
The team will be in frequent contact with you during this phase as they communicate necessary changes to the game.
So now I am at a bit of a loss as to why I haven't received a reply yet and I thought I should post this before I sent another email, to check whether or not the process has changed and if I had been silently rejected.
Both of the emails were sent after the address was made public, so maybe my emails had both been missed?
(I assumed that this section was the best place for this, but it could also apply to featured nominations too)