Yes, he has now admitted what was generally known; that the armed men with insignia removed from their matching uniforms and vehicles with Russian number plates, who occupied Ukrainian airfields and other installations in Crimea, were Russian troops, and not, as he previously claimed, local people who had bought their uniforms, guns and tanks in some Crimean shop.
AFAIK he is still denying that the well-organised armed units, in matching uniforms with no insignia, who spearheaded the assaults on Eastern Ukrainian police stations and government buildings, are anything other than local people who bought their uniforms and guns in a shop. It is possible that he is saying this in order to deny the invasion of a neighbouring country by units of the Russian Army. Or perhaps it is actually true (this time). Who knows.