South Korea's SK Telecom is planning to distribute the Android 4.0 Ice Cream Sandwich update to Galaxy S II owners starting at 10AM local time tomorrow, March 13th. This information was tweeted for the whole world to see earlier this morning, but the offending tweet has since been pulled. We've kept a screenshot for posterity and have also taken a look at some documents on SK Telecom's internal website that confirm the date and time of the download. With all of that preparation in place, the only reason we can deduce for SK deleting its tweet is that Samsung is uncomfortable with having information about the update announced by a carrier instead of Samsung itself.
All indications point to the ICS upgrade for the Galaxy S II becoming available very shortly indeed, so we'd advise you to keep a close eye on the Samsung Mobile Twitter account to know exactly when the new software will drop.
Update: SK Telecom has lived up to its promise of a March 13th update and is being joined by local competitor KT and a number of European operators in distributing ICS to GSII owners today.