Looks like those leaked slides on the Internet were right. AT&T has changed their data plans. They appear to have totally separated Text messaging from the PDA data plans. The data-only PDA plans are cheaper now but when you go to add a Text messaging package you end up paying more in the end. In my case, the PDA Personal Max plan which includes 1500 text messages for $39 would now cost $50 per month ($35 for the PDA data plan + $15 for the 1500 text messages option). I am pretty sure they are grandfathering in people who had the previous cheaper package.
My online account manager still shows me as having the PDA data plan “PDAPERUNL1500MSG” for $39.99. It looks like AT&T hasn’t gotten around to changing the PDA data options in the Online Account Management website so if you were thinking about getting one of those plans you better do it now before the website is changed to reflect the newer rates!