We have done testing with iScore Baseball on iPhone OS Version 3.1, and are very happy to say that it fixes the memory leaks many people were experiencing with iPhone OS 3.0 and 3.0.1 (see this link under MEMORY LEAKS for more details about that - http://iscore.freeforums.org/post2752.html).
In our opinion, this is the biggest reason to upgrade to iPhone OS 3.1 (though there are plenty of new features as well
).Nice job Apple.