Duck and cover -- Samsung announced this morning that its latest monster handset, the Galaxy Mega, will be arriving on our shores this month. The 6.3-inch monolith will be coming to AT&T, Sprint and US Cellular. Beyond that, availability information is one thing about this phone that's still on the small side -- as the company explains in a press release this morning (which you can find in all of its PRy glory below), "each carrier will announce their specific availability, colors and timing." We do know that it'll have Android 4.2.2 and a 1.7GHz dual core processor. Expect mo