iPad activations on AT&T were up more than threefold from last year's iPad launch, according to a statement released by AT&T today. The carrier did not release any specific activation numbers, however. Last year, the cellular 4th-generation iPad and the first-generation iPad mini launched several weeks after the Wi-Fi only models did. iPad activations on AT&T increased more than 200% over the past three days compared to last year’s launch weekend, driven by consumer excitement around the new iPad Air and the popularity of AT&T Mobile Share, which lets customers add an iPad to their existing data plan for just $10 a month. We also