NTT Docomo pushes a software update today to Samsung GALAXY SII LTE (SC-03D model) which doesnt bring Android 4.0 Ice Cream Sandwich OS to the smartphone but rather a minor upgrade. After the upgrade is installed the new firmware build is OMLG5 . The software update adds stability by fixing some bugs like the e-book content specific events error and a few others.
GALAXY S II LTE model is upgradeable via Samsung KIES software tool which you can get it from here and via OTA (over the air).
source NTT Docomo (with Google Translate)