We won't know until we get out there and look!
But I would say there is a fair chance we could find life in the next couple of years (if it's to be found). Jupiter's moon Europa and Saturn's moon Enceladus both have liquid oceans under their icy surfaces. And both of them have ice volcanoes that eject some of the material from their oceans into outer space. In the near future we plan to fly a probe through the plumes and analyze the samples for microbial life.
Another exciting bit of science is the James Webb Telescope which is going to be launched next year. It is a hundred times more powerful than the Hubble Space Telescope and will be able to analyze the atmosphere of exo-planets. If we find a planet with high oxygen rates then we will know that it harbors at least basic life - perhaps something similar to cyanobacteria - because high rates of oxygen in an atmosphere can only be maintained by life. Without a constant renewal oxygen will bond with hydrogen - the most common element in the universe - and turn back into water.