Key points, ripped straight from the website;<p>* Exxon Mobil’s been in the Dow in some form since 1928, but its tenure as the longest-serving component is coming to an end.<p>* On Monday, S&P Dow Jones Indices announced the largest changes to the 30-stock benchmark in seven years.<p>* Exxon will be replaced by Salesforce. Amgen and Honeywell International are replacing Pfizer and Raytheon Technologies.