Caroll has evidently started a "farewell tour" this year, beginning with a stop off at the Great Philadelphia Comic Con this spring:
http://www.philadelphiacomiccon.com/project/caroll-spinney/
So, if you still haven't had the opportunity to meet Caroll, and you happen to see he'll be in your town, or within close proximity in the months to come, you better take advantage of this, because this may be your last chance!
I'm also going to take this as a further indicator that he will, indeed, officially retire after Season 50.
http://www.philadelphiacomiccon.com/project/caroll-spinney/
So, if you still haven't had the opportunity to meet Caroll, and you happen to see he'll be in your town, or within close proximity in the months to come, you better take advantage of this, because this may be your last chance!
I'm also going to take this as a further indicator that he will, indeed, officially retire after Season 50.