From what I've seen in the signature editing, no. I've read previous posts about this particular question & the answer is also no.
Although, reading the FAQ section on editing/customizing signatures, the following line does appear in the explaination: "This might include pictures...,". So, I don't know if it will be a consideration down the line, or if the emphasis in that statement hinges on the word might & that has already been decided to be won't.
On edit, I guess Janet answered the question.
Lori & Dave - FMA #3415 | FMCA #F419886 | RV/MH Hall of Fame Lifetime Member
2006 Fleetwood Bounder 36Z & 2014 Honda CRV AWD, My iRV2 Photo Albums
How is it one careless match can start a forest fire but it takes a whole box to start a campfire?