MK-Studios have released a few previews and a short bit of information on their upcoming updates for Lisbon (LPPT) and Tenerife South (GCTS) airports.
We will start off with Lisbon International Airport (LPPT). After the very successful release of Lisbon airport, MK-Studios have been hard at work tweaking, fixing small details. So far, all we know is that the the airport will get improved night lighting, fixed jetways (not to be confused with static jetways), 3D passenger inside the terminal and several other various fixes. It has not been stated whether or not the 3D passengers will be animated or not.
Moving on to Tenerife South (GCTS), this airport is getting more of an area surrounding update, but the airport itself will be improved. This will include, new satellite coverage with 45cm per pixel resolution for all islands, autogen will be improved, the ground markings and stand names on the airport will be updated. MK-Studios also said that they will be adding several 3D items around the airport and surrounding mountains to improve the realism and immersion aspect when flying into or out of the airport.