MLB 12: The Show allows cloud saving.
When it comes to MLB 12's Franchise mode, a number of other improvements will also be included. More realistic trades based on things like individual teams' strategic needs, and more detailed information will be presented via the trade interface. Player lineups will also reportedly be easier to adjust.
CPU player generation has been upgraded as well, resulting in things like "more authentic pitch repertoires," and fewer players with stats that are a bit too balanced. In other words, the CPU will generate players that have more defined strengths and weaknesses, much like in real life. Player cards have also been enhanced a bit, and will now be accessible from any game screen on which the player can be highlighted.
Rounding out the list of noted improvements are some upgrades to the Franchise menu, which include "adding in your next game information, displaying the current standings, and showing you the current league leaders for batting and pitching."
MLB 12: The Show comes out on March 6 for both PlayStation 3 and PlayStation Vita.