Titan greenhouse effect!!!!

ive been reading a book which has stated that there is a substantial green
house effect on Titan
( similar to the Venus one but not so extream ) the upshot of which is the
same though, a
warmer surface temperature than one would normally expect considering its
distance from
the sun, the authur was hinting that we cant rule out some type of
biological activity there.
When does that cassini probe get there?

Hayley