I would bet that we are going to see them at CES 2011. Digitimes are reporting:
Acer is set to launch three tablet PC models featuring Android 3.0 in the first quarter of 2011. The respective models will feature a 7-inch panel, a 10-inch panel, and a 5-inch panel, with the 5-inch panel based device targeted at the market between smartphones and mainstream tablet PCs, according to sources from upstream component makers.
Acer is currently cooperating with Compal Electronics and Quanta Computer for development of its tablet PCs and Acer has not yet decided which player to place the order with, the sources noted.