CNN International will expand its output of programs from London as part of a package of scheduling changes.Commencing in the new year, three new prime time programs will emanate from CNNI’s regional news center in London, where a second studio is under construction. “World News,”"World Business Today” and the “International Hour” will air between 6 p.m. to 9 p.m. London time. “Almost half (our) programming is now produced expressly for the international network and plans for 1993 involve completing a full schedule of original programming for CNN International,” commented Peter Vesey, vice president of CNNI. CNNI is also constructing an enlarged state-of-the-art facility in Atlanta, where it is adding production and technical staff. New ad sales staff also have been appointed in Europe and for Latin America. International ad sales have increased by more than 100% since this time last year and now represent 11% of CNN’s total advertising revenue. Per Vesey, in 1993, CNNI will emphasize two types of programming: round-the-clock breaking news and in-depth special reports. Example of the latter was the three-day series of reports from Paris, “France Decides,” which in September analyzed the French referendum on the Maastricht Treaty.