1. I managed to receive IDW Phase 2 hardcovers volumes 1-7 for Christmas, and my preorder for 8 is coming through very soon. I see a preorder for 9 is up now, but I am worried these won't continue to completion of the series because of circumstances involved with my second question. Is there any indication that these will stop being printed before they finish the series in this format?
There's currently no reason to assume they'll stop, especially now there's a fixed end-point. It'll ultimately depend on whether they keep selling, but I expect that they at least want
to finish the set.
That being said, they'll have to speed things up a bit beyond two volumes per year if they want to finish any time soon. After Dark Cybertron, there were three or more books running at pretty much any time, and it'll likely take them up to volume 20 to finish the continuity.