Unfortunately, it's not a planning fault, rather having to stay compliant with the law - in this case an unintended consequence of the Sarbanes-Oxley (SOX) act. Two things run one afoul of this law: failure to announce a "new" feature at the original launch and then delivering it for free some time later. So if you buy the packaged version (perpetual license), you're stuck with what was included in the package at the time of release. Since Acrobat XI wasn't even announced until this month (pre-announcing products and features also causes issues witth the Security & Exchange Commission - SEC), it can't be included as an upgrade in the TCS unless some cash changes hands to satisfy the accounting requirements for SOX.
If you have a cloud-based subscription to the TCS, then that's a different ballgame, since you're effectively renting it month-to-month. So with this model, Adobe can include new releases in a suite (as has been done in Creative Cloud Suite of tools).
You have a choice as to which route to go with this product: outright purchase or subscription.
