The Wall Street Journal is reporting that Android devices by Samsung and LG are in the early stages of testing, though a formal switch away from BlackBerry could still be months away. A Department of Defense spokesman confirmed that the White House "is piloting and using a variety of mobile devices", though another person close to the situation said that Apple's iPhone is not part of the testing plan. So, the White House may be testing "a variety of mobile devices", but it seems to be testing just one mobile platform: Android. Both Samsung and BlackBerry commented, but said nothing noteworthy concerning the rumor.
Of course, it should be noted that there is absolutely no indication that President Obama will be giving up his BlackBerry. The President has said in the past that he would prefer to use his iPhone, but that doesn't seem to be in the cards. Still, a switch from a modified BlackBerry 7 device to a more modern Android device would likely be a welcome change for the so-called "tech president".