Source: Фотоматериалы - "ТранÑформеры 3: Ð¢ÐµÐ¼Ð½Ð°Ñ Ñторона Луны" - Stark Industries Apparently, the Russian office of Paramount posted them on Facebook. Looks like the first two are set photos (cause Bay is in them) and the rest are stills from the movie. Credit goes to Lieutenant-Jack on Bay's forums for the find.
Considering what we know of the movie thanks to spoilers, we've barely scratched the surface of any of it in images/trailers/etc. They're just saving it all for the movie and that's fine by me.