Unless I'm misreading the pdf linked in the first post, there are only 6 errata fixed from A3 to B0, although some of them do seem fairly important. 2.7 states that random code execution might occur on resets and brown-outs... does this include regular startups? If not, using the Stellaris LaunchPad as a development platform should be fine. It'll be plugged into my laptop and hopefully not subject to unexpected resets and brown-outs.