Yes, Teske (and Watson and Simpson) were lightly mentioned in this article, but I wouldn't read too much in to that --- the focus was mostly on the new players entering the program/eligible to play this season, with a nod to the returing heavy rotation contributors (Wagner, MAAR, Robinson).
As for Matthews, I didn't take any negative connotation from Beilein's comments. True, he wasn't effusive in his praise --- like he was for Davis and has been in past years for guys like Robinson in first year of UM eligibility. But sounds very much like they expect Matthews to be a shut-down defender and a shot-hunter on offense. I think it is fair to question how efficient Matthews will be this year on offense, but it sounds like Beilein & Staff feel he has the ability to develop into an efficient performer on offense.
Based on this article, my guess for the 8-man rotation this season would be
Wagner & Davis in the post
Matthews, Robinson, & Livers on the wings (with some potential Wagner mins in a 2-bigs rotation)
MAAR, Simmons & either Simpson/Brooks in the backcourt with a 2-PG rotation filling MAAR's rest time
***disclaimer, this is not a knock on the guys not included in the rotation, just a nod to Beilein traditionally tightening his bench come B1G play