Here's a mystery!

IBM just made this announcement:

ARMONK, N.Y.--(BUSINESS WIRE)--

IBM (IBM) will make a major business announcement and separately release its third-quarter 2014 earnings results on Monday, October 20 at 7:00 a.m. EDT.

Martin Schroeter, IBM senior vice president and chief financial officer, will host the company's quarterly earnings conference call on Monday, October 20 beginning at 8:00 a.m. EDT.

The Webcast may be accessed via a link at http://www.ibm.com/investor/events/earnings/3q14.html.

Guesses?

UPDATE: Bloomberg says IBM will announce that it's paying $1.5 billion to Globalfoundries inc. to take its chip manufacturing biz off its hands.